Science

Playidy
10 Views · 2 years ago

🌍 Neptune is known as the eighth most distant planet from the Sun. It lies more than 4 billion miles from Earth, making it too far away to be seen by the naked eye.
On September 23, 1846, Neptune was the first planet to be discovered through mathematical calculations. It was the second planet after Uranus to be revealed with a telescope, but the first planet discovered by astronomers who were specifically looking for it. Because of its blue color, Neptune was named after the god of the sea in Roman mythology.
The story of the discovery of this mysterious blue giant on the outskirts of the solar system is quite curious and unusual. It was a triumph for Newtonian physics, because it proved that the motion of planets is entirely subject to the laws of gravity.
Neptune has a composition close to Uranus, and both planets are placed in a distinct category of "ice giants". Neptune has a bright blue color with a particular azure tint. Externally, it looks very similar to Uranus, these two planets can even be confused. However, the color of Neptune is more saturated and bright.
Neptune is the smallest of the gas giants. Also called the planet of storms, Neptune is the seat of the strongest winds in the solar system.


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💥 The Extraterrestrial World of the Planet Neptune:
- Neptune is the eighth most distant planet in the solar system. It is also the fourth largest planet in diameter and the third largest in mass. In fact, Neptune's mass is 17 times greater than Earth's while its diameter is only 4 times greater than our planet. Despite its title as the 4th largest planet in the solar system, we could easily fit 58 Earth inside Neptune.
Thus, the average density of Neptune is only 1.6 g / cm3, that is to say about one third of that of the Earth, or about one and a half times more than that of water.
The low densities are characteristic of the four giant planets: Jupiter, Saturn, Uranus and Neptune. Among these four, the first two are the least dense because they are mainly made of gas. The densest are Uranus and Neptune because they are mainly made of ice.
With Uranus, Neptune belongs to a subclass of gas giants, called "ice giants" because of their smaller size and their composition made mainly of volatile elements such as methane, ammonia and water, rather than hydrogen and helium.


The average distance between Neptune and the Sun is 4.5 billion km, which is about 30 times the average distance between the Sun and the Earth, and it takes almost 165 years for Neptune to make one complete revolution around our star. The distance between Neptune and Earth is between 4.3 and 4.6 billion km.
On July 12, 2011, Neptune made its first complete orbit since the discovery of the planet in 1846. Seen from our planet, Neptune could thus be observed differently since the day of its discovery, because the period of revolution of the Earth around the Sun, which is 365 days, is not a multiple of the period of revolution of Neptune.
The axial tilt of Neptune is 28.3°, which is similar to the axial tilt of the Earth and Mars. Therefore, the planet experiences similar seasonal changes. However, due to Neptune's long orbital period, the seasons last about forty years each.
Neptune's sidereal rotation period is about 16 hours and 7 minutes. Due to an axial tilt similar to that of the Earth, changes in the sidereal rotation period during its long year are not significant.
Among all the planets of the solar system, this type of rotation is the most pronounced in Neptune. This leads to a strong latitudinal wind shift.



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🎬 On the program today:
- 00:00 - Introduction
- 02:15 - General information about Neptune
- 03:45 - Neptune's orbit and rotation
- 05:53 - Seasons on Neptune
- 07:41 - Gravitational field and orbital resonances
- 10:30 - Neptune's magnetic field
- 12:52 - Neptune Discovery Day
- 17:31 - The Exploration of Neptune
- 22:30 - Hypothesis of the formation of Neptune
- 26:00 - Internal structure of Neptune
- 29:40 - Neptune's atmosphere
- 34:09 - Climate on Neptune
- 40:00 - What is the great dark spot?
- 43:50 - Neptune's moons
- 46:27 - Mysterious moon Triton
- 54:46 - Moon Proteus
- 55:42 - Moon Nereid
- 56:32 - Moon Larissa
- 57:30 - Rings of the ice giant Neptune

Playidy
70 Views · 2 years ago

We used to think that Earth was at the center of the universe, but now we know we're not even at the center of our own galaxy. Countless wonders exist between where earth is situated, in Season 2, Episode 4, "The Milky Way." #TheUniverse
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Playidy
11 Views · 2 years ago

🌍 The universe is full of strange objects and astronomers are far from having discovered everything. When you look at the stars from Earth, you have no idea how many different stars exist beyond our planet and galaxy. And above all, you are far from imagining all the unusual objects that populate the Universe, hundreds of light years away from you. There are many objects that have been theorized by astronomers, but whose physical existence has never been proven. No model, even the most advanced, can guess the extent of the mysteries of the Universe, which we are discovering little by little.

🔥 As a reminder, the videos are published on SUNDAYS at 6:00 PM.


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💥 Mysteries of the Universe:
- All the stars you've seen on this trip are impressive... But they're not the biggest stars we know! This title could go to the star Mu Cephei, also called the Herschel Garnet, located at about 2090 light years from our Earth. This star is neither more nor less than the best known red hypergiant. Its diameter is 2000 times that of the sun, it could contain 1 billion suns!
At a little over 3000 light-years from our Earth, the super red giant VY Canis Majoris, which is part of the constellation of the Great Dog, could also claim the title of largest known star. It could contain 3 billion suns, even if it weighs only 17 times the weight of our star. Its diameter is 1500 times that of the Sun. Its explosion is expected in the next 100,000 years, and it could well destroy part of the neighboring star system that surrounds it. We are too far away for it to have an impact on the Earth.


UY Scuti has also long been considered the largest star currently known. Its diameter has been estimated at 1700 times that of the Sun but this measurement is imprecise. In 2012, the star was thought to be located 9000 light-years from Earth. But in 2018, an ESA astrometry mission estimated that it was actually only 5000 light years away! UY Scuti would then be smaller than previously thought. Still measuring about 2.4 billion km wide, or 16 times the distance between the Earth and the Sun.
In the top 4 of the largest known stars, we also find Stephenson 2-18, a red super giant 2 150 times larger than the Sun. It would take 10 billion Suns to fill it! This star is very distant since it is estimated to be 20,000 light years from Earth. Although this star is the largest star currently discovered, this does not mean that it is the largest star in the universe. And to tell you the truth, we are not yet out of our galaxy, the Milky Way. The ranking has not finished changing...

Now that you have been able to observe the largest stars we know, we continue our journey in search of the unusual objects hidden in the Universe. The star PSR J0952-0607 is amazing because it is the most massive neutron star ever observed. According to the researchers, it would even be at the limit of the maximum mass for a neutron star before it changes into a black hole! It is also the fastest star in the Milky Way since it makes 707 revolutions on itself per second. Nicknamed "black widow" in reference to the female spiders that devour the male after mating, this star spins so fast that it takes matter away from the companion star that evolves next to it. This star close to PSR J0952-0607 has been almost completely devoured: it is now only 2% the mass of the Sun.




🎬 On the agenda today:
- 00:00 - Introduction
- 01:27 - In search of the largest star in the universe
- 12:25 - PSR J0952-0607, the fastest star in the Milky Way
- 13:33 - The Mysteries of Supernova...
- 17:30 - The Pulsar stars
- 21:23 - The quasars
- 26:37 - Tabby's star, the star that makes us believe in an extraterrestrial civilization
- 30:43 - The neutron star that emits infrared light
- 35:41 - Nuclear pastes, the most resistant material in the universe
- 37:28 - Hauméa, the oval planet
- 40:23 - The Wandering Planet SIMP J01365663 + 0933473
- 43:43 - TRES-2B, the darkest planet in the universe
- 46:33 - 55 Cancri E, the diamond planet
- 48:29 - KEPLER 438B and GLIESE 581C, planets that could host life
- 54:57 - WASP-12B, the exoplanet that is devoured by its star
- 56:08 - PSR B1620-26 B, the oldest planet
- 57:36 - Alcyone, the largest galaxy in the universe
- 01:01:38 - NGC1052-DF2, the galaxy without dark matter
- 01:03:07 - DGSAT I, the fossil galaxy
- 01:05:05 - A void in space

Playidy
12 Views · 2 years ago

Astronomers are vetting a technique that could aid the hunt for Planet ... for Planet Nine, astronomers eye a new search technique for the elusive world ... and it could potentially spot Planet Nine — also known as Planet X, ...

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Playidy
17 Views · 2 years ago

In space travel there is a saying that the first 50 miles and the last 50 miles are the most dangerous. Explore the controlled explosion of launch, the fiery crucible of reentry and everything in between.

#TheUniverse

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Playidy
11 Views · 2 years ago

Discover the most memorable events in the history of our solar system. Travel to the surface of these dynamic worlds to witness the moments of high drama that uniquely shaped each one.

Best of Earth Lab: http://bit.ly/EarthLabOriginals
Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos

#planets #solarsystem

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00:00:00 Introduction
00:00:10 What Will Earth Look like In 5 Billion Years?
00:05:55 Why Is Uranus On Its Side?
00:12:03 The Planet That Rains Diamonds
00:16:24 The Largest Waterfall In The Solar System
00:22:31 The Planet With Supersonic Winds
00:26:39 Mercury: The Scorched Planet
00:36:54 The Death of Mars
00:43:21 How Saturn Got Its Rings
00:49:57 Jupiter: The Godfather Planet
00:58:31 The Attacker & Defender of Earth

Playidy
14 Views · 2 years ago

On alien planets, they rain from the sky as scalding iron. On distant moons, even at hundreds of degrees below zero, they slosh around in pristine lakes of methane. See more in Season 4, Episode 9, "Liquid Universe."

#TheUniverse

Subscribe for more from The Universe and other great The HISTORY Channel shows:
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History Newsletter - https://histv.co/newsletter
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The HISTORY® Channel, a division of A+E Networks, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media. The HISTORY® channel has been named the #1 U.S. TV network in buzz for seven consecutive years by YouGov BrandIndex, and a top favorite TV network by Beta Research Corporation. For a deeper dive, visit history.com or follow @history on Instagram, Twitter, Facebook, YouTube and TikTok. For additional press materials visit the A+E Networks Press Center at http://press.aenetworks.com.

Playidy
5 Views · 2 years ago

Explore the biggest cosmic secrets in 4K that have intrigued scientists and stargazers for years. Learn about the elusive Planet Nine and the evidence of alien life. Discover the mind-boggling size of the universe, from the cosmic microwave background radiation to the observable universe. This video takes you on an awe-inspiring journey to the edge of the universe traveling through space and time, revealing the mysteries of our universe.

►Watch the complete list of all the space events in 2023
Click here: https://youtu.be/qj6hbxbO9zc

►Learn everything About Solar Flares!
Click here: https://youtu.be/qG4MeuQYLzc
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Special thanks!→

Thank you Vadimsadovski for the brilliant thumbnail: Licensed from Adobe Stock on 09/02/2023. [Asset ID: 480674007]

NASA/ESA/ESO/CSIRO/NRAO/SARAO/NPS/APOD Channel

Resources and further reading→

Planet 9 disguised as a primordial black hole:
https://www.nytimes.com/2020/0....9/11/science/astrono

Is Planet 9 a primordial black hole?:
https://science.howstuffworks.....com/planet-nine-blac

“Alien” Signals detected by Chinese Astronomers:
https://gizmodo.com/china-alie....n-signals-radio-tele

China's Ministry of Science and Technology’s deleted report about detection of technological traces and extraterrestrial civilizations:
https://mp.weixin.qq.com/s/BtLLCb0GlPxjmhbAz5pUOw

Identifying the source of perytons at the Parkes radio telescope:
https://academic.oup.com/mnras..../article/451/4/3933/

How big is the Universe?
https://www.space.com/24073-ho....w-big-is-the-univers
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If you think your work has been copied→
I have a great regard for other people's work and have no intention of infringing on their copyright. When I'm creating videos, I pay very very close attention to this. If I accidentally and unintentionally copied your work, I strongly urge you to notify me in the comment box or email id before submitting a copyright strike. Please be assured that I do not aim to copy anyone's work, and if I discover that I have done so, I will delete it as quickly as possible.
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#space #spacedocumentary #spacemystery #nasa

Playidy
12 Views · 2 years ago

In this space documentary, we journey into the universe to explore the life beyond the planet Earth. From the edges of our solar system to the farthest reaches of space, we'll see the incredible beauty and complexity of the universe.

Journey into Outer Space is a stunning space documentary that explores the life beyond Earth. From the edges of our solar system to the farthest reaches of space, we'll see the incredible beauty and complexity of the universe. This documentary is an amazing exploration of the universe and its many mysteries, and is perfect for anyone interested in space and the life that exists beyond our planet.

00:00 Earth 2.0
19:07 Titan
38:53 Pluto
54:21 Mars
1:13:46 Paradox Fermi

Playidy
20 Views · 2 years ago

✅ ☕️ Buy us a coffee to show your support!
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Enjoy this space documentary by Factnomenal!
Space discoveries 24/7! The best space and universe facts!

Nobel Prize Worthy? Scientists Just Created Matter From Light
https://youtu.be/A81dpCBSohY

Terrifying Black Hole Swarm Is Bigger Than Scientists Imagined
https://youtu.be/Ire8nZa-Rpk

Topics Discussed/Related:
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- Outer Space
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Playidy
5 Views · 2 years ago

🌍 Pluto, one of the most controversial objects in the solar system, a tiny cold celestial body located 40 times farther from the Sun than the Earth, remained completely unexplored for a long time. This distant and mysterious world was long considered the ninth planet of the solar system, until the International Astronomical Union established new criteria for the concept of "planet" and deprived this celestial body of the right to be called "planet" and transferred it to the category of dwarf planets, like a small body of the solar system.
But why is Pluto no longer the ninth planet of the solar system?
Although Pluto is no longer considered a major planet, it is of great interest to the international astronomical community. With the knowledge of Pluto's existence, major explorations have led to the discovery of several trans-Neptunian objects, comparable in size and mass to Pluto.


🔥 As a reminder, videos are published on SUNDAYS at 6:00 PM.


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💥 What does Pluto look like? :
- Pluto's dimensions have been measured at less than 3 kilometers. The diameter of the planet is 2376 km. This is far less than the diameter of any planet in the solar system, including Mercury, and significantly less than the diameter of our moon!
Pluto is more than 5 times smaller than the Earth.
As early as the beginning of the 20th century, astronomers had predicted that a stellar object beyond Neptune, with a mass greater than that of the Earth, was present. When Pluto was discovered, it turned out to be too tiny to have such an influence. Between 1930 and 1978, the estimate of Pluto's mass gradually decreased from 1 Earth mass to 1/10th of the mass of our planet.
However, in 1978, the discovery of Charon, Pluto's moon, immediately allowed the mass of the dwarf planet to be accurately determined. It turned out that Pluto is more than 5 times lighter than our Moon and is five hundredths the mass of Earth!
The volume of the dwarf planet is almost 7 billion cubic kilometers. This is about 152 times smaller than the volume of our planet. This means that up to 152 Pluto could fit inside the Earth!
If we divide the mass of a planet by its volume, we get the average density. The average density can indicate the composition of the planet. For example, the density of Mercury and the Earth is greater than 5 g per cm³. This suggests that the composition of these planets is dominated by metals and rocks. The density of Jupiter and Saturn is only about 1 g per cm³ because they are gaseous planets.
The average density of Pluto is 1.88 g per cm³. This is an intermediate value between gas planets like Jupiter and rocky planets like Earth. Various ices play an important role in the composition of Pluto. Chemically, Pluto seems to be composed of 70% basaltic rocks and 30% water.

Pluto moves around the Sun in an orbit that is different from the orbits of the major planets in the solar system. All the major planets orbit the Sun on approximately the same plane, which is the ecliptic plane, and Pluto's orbit is tilted toward it by 17 degrees. In addition, Pluto's orbit is elongated, more like an oval than a circle.
Due to the elongation of the very elliptical orbit, Pluto moves away from the Sun up to 49 astronomical units, and then gets closer at a distance of 30 AU. It should be remembered that an astronomical unit is the average distance from the Earth to the Sun, about 150 million km.



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🎬 On the agenda today:
- 00:00 - Introduction
- 02:33 - General information about Pluto
- 02:58 - Physical characteristics of Pluto
- 04:58 - Pluto's orbit and rotation
- 07:51 - Pluto's magnetic field
- 08:17 - History of discovery of Pluto
- 14:02 - Exploration missions
- 17:00 - Why is Pluto not a planet?
- 23:35 - Origin and place of Pluto in the solar system
- 25:51 - What color is the dwarf planet Pluto?
- 27:57 - What does the surface of Pluto look like?
- 32:57 - Strange internal structure of Pluto...
- 36:39 - Pluto's Atmosphere
- 45:32 - Climate of Pluto
- 47:46 - Pluto's moons
- 48:25 - Charon: the largest moon
- 55:14 - The other four moons
- 56:50 - Do rings exist around Pluto?
- 58:47 - Is it possible, one day, that Pluto and Neptune collide?
- 01:04:27 - What future for Pluto?

Playidy
6 Views · 2 years ago

Welcome to the mysteries of the universe, a world beyond our imagination where stars are born, galaxies collide, and nebulas light up the darkness. Humanity has looked up to the stars in awe and wonder for centuries. We have explored the outer reaches of our solar system, but there is still so much to discover. From the ancient astronomers who studied the stars to modern space telescopes that can capture the most distant and faintest objects, human curiosity about the cosmos has never wavered.

In this documentary, we will journey deep into space to uncover the secrets hidden within the stars, galaxies, and nebulas that make up our universe. We will delve into the birth and death of stars, the formation and collision of galaxies, and the breathtaking beauty of nebulas. We will look at the new research and scientific discoveries that have helped us learn more about the universe and given us new questions and mysteries to solve.

We will look at the birth of a star, starting from the dense cloud of gas and dust known as a nebula, where gravity causes the material to collapse and heat up, eventually forming a protostar. As the protostar continues to collapse and heat up, nuclear fusion begins, creating the intense heat and light we see in a star. We will also explore the different stars, from small red dwarfs to massive and luminous blue giants, and their impact on the cosmos.

The universe is also home to countless galaxies, each with billions of stars and a vast range of structures, from spiral galaxies with their elegant arms to elliptical galaxies that appear featureless. We will look at how galaxies start, change, and interact over time and how mysterious dark matter and dark energy are essential to how galaxies start and change.

We will also inspect the beauty of nebulas, the vast clouds of gas and dust in space. From the iconic Orion Nebula to the stunning Eagle Nebula, we will explore the different nebulas and their role in the birth and death of stars. We will also delve into the mysteries of planetary nebulas, the glowing clouds of gas and dust created when a star reaches the end of its life. Finally, we will look at the current and future space missions that aim to explore the mysteries of the universe and the technologies that allow us to study the stars, galaxies, and nebulas in greater detail.

Join us as we uncover the universe's secrets and discover just how much we have yet to learn about the world around us. From the birth of a star to the collision of galaxies, from the stunning beauty of nebulas to the mysterious dark matter and dark energy, we will explore the mysteries of the universe and find out how much we still don't know about it.

In the stellar nurseries of the cosmos, stars are born. They live for eons. Then do they die? Why do some live longer than others? Well, it depends on how big they become and precisely what combination of elements they are composed of. Somewhere between here and the edge of the universe lies the answer. Nearly 4000 light years away, further luminous clouds suspended in space encircle what was once a star like our sun. All that's left of it are these brightly colored gases. Elements formed by nuclear fusion deep inside the Star are released into space upon its death. Green and violet, hydrogen, and helium. The raw materials of the universe, Red and blue, nitrogen, and oxygen, are the building blocks of life on Earth. The oxygen in our lungs and the nitrogen in our DNA Were all produced by nuclear fusion. Stars like this had to die so that we could live.


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Playidy
1 Views · 2 years ago

Throughout human history, we have built an incredible body of knowledge about the universe around us. However, we are only at the beginning of this journey
The universe is a twilight zone of secrets, unexplained mysteries, and black holes shaped by unseen forces. In this video, we will reveal some of them:
00:00 What lies beyond the universe?
15:34 Does Planet 9 Really Exist?
30:49 What Origin of Life?
47:09 Is there life on Jupiter's moon?
1:03:52 What Voyagers 1 And 2 Detected Beyond Our Solar System?

Playidy
2 Views · 2 years ago

https://www.youtube.com/watch?v=6Y7Y4EfF0kY
Journey Through The Universe - HD Documentary
Advexon Documentary TV

Playidy
3 Views · 2 years ago

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The universe is a giant jigsaw puzzle made up of an infinite number of pieces. We can only see a small part of it and can only guess at the rest. The cosmic abyss hides a huge number of mysteries and riddles, and there are still a lot of them up ahead for us to unravel.

0:00 Intro
01:36 How Does Order Get Born from CHAOS? The Butterfly Effect
12:26 The Anthropic Principle
23:11 Why Is the Universe Silent? The Great Filter
31:50 A Spaceship Capable of Reaching the Edge of the Universe
41:13 What Lies Beyond the Universe?
52:49 What will Happen After the Death of the Universe?
01:05:11 Ending

#Universe #Space #Film #Kosmo

Playidy
10 Views · 2 years ago

Enjoy this space documentary by Matter!
Space discoveries 24/7! The best space and universe facts!

Topics Discussed/Related:
- Space livestream
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- NASA Discoveries
- Elon Musk
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Playidy
2 Views · 2 years ago

NASA's OSIRIS-REx spacecraft is cruising back to Earth with a sample it collected from the rocky surface of asteroid Bennu. When its sample capsule parachutes down into the Utah desert on Sept. 24, OSIRIS-REx will become the United States’ first-ever mission to return an asteroid sample to Earth.

Credit: NASA's Goddard Space Flight Center
James Tralie (ADNET):
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Music is "Supernatural Superhero" by Frederik Wiedmann of Universal Production Music.

This video can be freely shared and downloaded at https://svs.gsfc.nasa.gov/14316. While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: https://svs.gsfc.nasa.gov/14316. For more information on NASA’s media guidelines, visit https://nasa.gov/multimedia/guidelines.
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Playidy
3 Views · 2 years ago

Em uma caminhada espacial de rotina, essa astronauta se deparou com algo inesperado. #MistériosRevelados #Astronauta #Vigilância #shorts

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Playidy
4 Views · 2 years ago

Hey GetSetFlyers… Gaurav here.
Have you ever heard about a design that will reduce fuel consumption?? Because, nasa’s new airliner is going to make flying less expensive. That too, just based on its design. This nasa’s new airplane experiment is going to rely on a revolutionary design to make flying cheaper for everyone. If you want to know more about this plane and its specifics, tune in and watch everything about it.

Instagram (Personal account) →https://instagram.com/gauravzt....hakur?igshid=NzNkNDd

Playidy
5 Views · 2 years ago

Quer assistir mais desse episódio? Confira o programa completo no nosso canal
#shorts #ciencia #cienciasemfim

Playidy
3 Views · 2 years ago

Após chegar ao planeta vermelho, o Rover Curiosity da NASA começou a investigar o solo marciano. Mas os cientistas espaciais ficaram estupefatos ao descobrir sinais de uma provável guerra nuclear.#discoverybrasil

Inscreva-se no Discovery Brasil: https://www.youtube.com/c/DiscoveryBR
Visite a nossa página oficial: http://bit.ly/DiscBra

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Playidy
4 Views · 2 years ago

Don't miss it! NASA and CSA (Canadian Space Agency) will announce during an event at 11 a.m. EDT on Monday, April 3, from NASA Johnson Space Center’s Ellington Field in Houston, the four astronauts who will venture around the Moon. Traveling aboard NASA’s Orion spacecraft during Artemis II, the mission is the first crewed flight test on the agency’s path to establishing a long-term scientific and human presence on the lunar surface.

The YouTube event is here: https://youtube.com/live/mua1L....ysc_JQ?si=EnSIkaIECM

Producer/editor: Phil Sexton
Producers: Aly Lee, Sami Aziz, Radislav Sinyak

Credit: NASA