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NASA searches the skies every night to find, track and catalogue near-Earth objects. But what would they do if there were a threat? NASA is launching its first planetary defense test mission — DART — and Johns Hopkins APL public affairs officer Justyna Surowiec wants to make sure you know all about it. Explore the #DARTmission: www.nasa.gov/DART The DART mission is a test of a technique that could be used to mitigate the threat of an asteroid on a collision course with Earth should one be discovered in the future. DART’s target is not a threat to Earth. While no known asteroid larger than 140 meters in size has a significant chance to hit Earth for the next 100 years, only about 40 percent of those asteroids have been found as of October 2021. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and updates.

NASA planetary defender Dr. Kelly Fast has a hard and fast rule: “Find asteroids before they find us.” Working in NASA’s Planetary Defense Coordination Office, Kelly is helping send a first-of-its-kind mission to test what it would take to “nudge” an asteroid in space. Find out more about the #DARTmission: www.nasa.gov/DART The DART mission is a test of a technique that could be used to mitigate the threat of an asteroid on a collision course with Earth should one be discovered in the future. DART’s target is not a threat to Earth. While no known asteroid larger than 140 meters in size has a significant chance to hit Earth for the next 100 years, only about 40 percent of those asteroids have been found as of October 2021. " *Thanks for watching science fact. *Please do subscribe for more science facts and updates.

NASA’s #DARTmission will purposely crash a spacecraft into an asteroid to change its orbital period. But in order to hit the mark, this test mission needs to locate its target first. That's why Johns Hopkins APL engineer Michelle Chen helped develop new autonomous navigation techniques that will ensure a bullseye. Follow DART: www.nasa.gov/DART The DART mission is a test of a technique that could be used to mitigate the threat of an asteroid on a collision course with Earth should one be discovered in the future. DART’s target is not a threat to Earth. While no known asteroid larger than 140 meters in size has a significant chance to hit Earth for the next 100 years, only about 40 percent of those asteroids have been found as of October 2021. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and updates.

Before NASA’s #DARTmission slams into an asteroid — in the name of science — it has to be designed, built, launched, and flown. Johns Hopkins APL systems engineer Elena Adams has made sure that the mission will hit the mark. Stay tuned for launch and impact: www.nasa.gov/DART The DART mission is a test of a technique that could be used to mitigate the threat of an asteroid on a collision course with Earth should one be discovered in the future. DART’s target is not a threat to Earth. While no known asteroid larger than 140 meters in size has a significant chance to hit Earth for the next 100 years, only about 40 percent of those asteroids have been found as of October 2021. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and updates.

NASA is crashing a spacecraft into an asteroid… on purpose! Our #DARTmission is a first-of-its-kind #PlanetaryDefense test to change the motion of an asteroid in space so that we could use this technique if an asteroid were ever discovered to be a threat to Earth. Follow DART: www.nasa.gov/DART The DART mission is a test of a technique that could be used to mitigate the threat of an asteroid on a collision course with Earth should one be discovered in the future. DART’s target is not a threat to Earth. While no known asteroid larger than 140 meters in size has a significant chance to hit Earth for the next 100 years, only about 40 percent of those asteroids have been found as of October 2021. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and updates.

NASA’s #DARTmission is crashing a spacecraft into an asteroid to try to change its motion in space. But how will we know if this test worked? That’s where Johns Hopkins APL scientist Andy Rivkin comes in. He’ll be studying the precise change in the asteroid’s motion right here from Earth. In fact, Andy loves DART so much, he even wrote a song about it. Follow DART: www.nasa.gov/DART The DART mission is a test of a technique that could be used to mitigate the threat of an asteroid on a collision course with Earth should one be discovered in the future. DART’s target is not a threat to Earth. While no known asteroid larger than 140 meters in size has a significant chance to hit Earth for the next 100 years, only about 40 percent of those asteroids have been found as of October 2021. *Thanks for watching science fact. *Please do subscribe for more science facts and updates.

Have humans ever visited Mars? Not yet, but we’ve sent lots of rovers, landers and orbiters to explore the Red Planet. NASA has two operating rovers — Curiosity and Perseverance — which are currently traversing the Martian terrain in search of rocks that could teach us about Mars’ ancient past. And with NASA Artemis, we’re working on new tech that could one day get humans to Mars. NASA scientist Dr. Mitch Schulte has more. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and updates.

How do we communicate with spacecraft? For decades, satellites have beamed data back to Earth by way of radio waves, with a network of ground-based antennas collecting the incoming information. Now, we're exploring laser communications, technology that will allow us to receive more data from farther than ever before -- faster, too. NASA space communications expert Risha George. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and update.

Is polar ice melting? The sobering answer is yes, and it’s the number one contributor to sea level rise. NASA scientist Dr. Brooke Medley tells us how NASA studies the relationship between ice sheets and sea level to better understand our changing planet. *Thanks for watching science fact. *Please do subscribe for more upcoming videos and update.

Greenhouse gas emissions decreased a little during the first year of COVID, but not enough to make a lasting impact. Less travel and cars on the road meant improved air quality. But greenhouse gases that cause climate change only decreased a little because we were still heating and cooling our homes, so these gases continued to build up in our atmosphere. NASA climate change scientist Lesley Ott tells us more about what scientists discovered. *Thanks for watching science fact. *Get subscribed for more upcoming videos and updates

Is there weather on the Moon? Yes, but not the weather you’re used to. The Sun’s solar wind is a type of “space weather” that can have a big impact on the Moon due to its lack of atmosphere. It can also affect all sorts of things like satellites, electronics and communications. Better understanding how space weather interacts with the Moon will be critical as we send #Artemis astronauts to the lunar surface.

Climate change refers to long-term shifts in temperatures and weather patterns, mainly caused by human activities, especially the burning of fossil fuels. *Thanks for watching science fact. *Get subscribed for more upcoming videos and updates.

Meet NASA’s rock detectives. Using tiny samples of lunar rock brought back by Apollo astronauts, these NASA Explorers are looking into the origins of our Moon, our planet, and ourselves. They might be among the first scientists to study samples from the Moon’s South Pole that will be delivered to Earth by Artemis astronauts. In episode 2 of “NASA Explorers: Artemis Generation,” we’re joining scientists like Natalie Curran and Jose Aponte, who are looking at clues buried in Moon rocks. Series Executive Producers: Katy Mersmann/Lauren Ward Season Producers: Lonnie Shekhtman/Stephanie Sipila/James Tralie/Molly Wasser Explorers: Natalie Curran/Jose Aponte *Thanks for watching science fact. *Follow for more updates and upcoming videos.

These are our explorers. They're the people who will get us to the Moon, collect Moon rocks, deliver them to Earth safely, and ensure that we can study them for years to come. On episode one of “NASA Explorers: Artemis Generation," meet astronaut Jessica Watkins, engineer Adam Naids, Moon rock curator Julie Mitchell, and astrobiologist Jose Aponte. They each had a different path to NASA, from conducting hazardous kitchen chemistry experiments in Lima, Peru, to exploring the Louisiana Bayou, to dissecting a cow’s eye in a science program in Colorado. Each person is a vital part of NASA’s goal to conduct science on the Moon’s surface. Series Executive Producers: Katy Mersmann/Lauren Ward Season Producers: Lonnie Shekhtman/Stephanie Sipila/James Tralie/Molly Wasser Explorers: Jose Aponte/Natalie Curran/Julie Mitchell/Adam Naids/Noah Petro/Kelsey Young/Jessica Watkins *Thanks for watching science fact. *Follow for more upcoming updates and videos.

NASA’s Space Launch System and Orion spacecraft launched from launch pad 39B for the Artemis I mission on November 16. This is an uncrewed flight test that will demonstrate the ability of the SLS rocket to safely carry the Orion spacecraft around the Moon and its return and recovery to Earth for the agency’s Artemis Program. *Thanks for watching science fact. *Follow for more upcoming videos and updates.

Raw NASA camera footage, taken from the Space Launch System's (SLS) core stage, shows the SLS separation of the solid rocket boosters two minutes and 11 seconds after liftoff. At 1:47 am EST (6:47 UTC) on November 16, NASA’s Orion spacecraft launched aboard the SLS rocket from historic Launch Complex 39B at NASA’s Kennedy Space Center on a path to the Moon, officially beginning the Artemis I mission. This mission is the first integrated test of NASA’s deep space exploration systems: the Orion spacecraft, the SLS rocket, and Kennedy Space Center ground systems. *Thanks for watching science fact. *Follow for more upcoming videos and updates.

Experience the Artemis I launch from the engine ignition to Orion's separation on it's journey to the Moon. *Thanks for watching science fact. *Follow for more upcoming videos and updates.

Cameras on NASA’s Space Launch System (SLS) rocket and Orion spacecraft give us amazing views of our adventure around the Moon. See up close views of the Moon from external cameras as well as the view from inside the capsule. Orion is the only spacecraft capable of carrying humans from Earth on Artemis missions to deep space and bringing them back to Earth from the vicinity of the Moon. More than just a crew module, Orion has a launch abort system to keep astronauts safe if an emergency happens during launch, and a European-built service module that is the powerhouse that fuels and propels Orion and keeps astronauts alive with water, oxygen, power, and temperature control, as well as a heat shield that can handle high-speed returns from deep space. SLS is the most powerful rocket in the world and the only rocket capable of launching Orion with astronauts and their supplies on Artemis missions to the Moon. Orion launched on the SLS rocket from Launch Pad 39B at NASA’s Kennedy Space Center in Florida Wednesday, Nov. 16, 2022. Artemis I is an uncrewed flight test of our SLS rocket, Orion spacecraft, and exploration ground systems for future Artemis missions—which will provide the foundation to send humans to the lunar surface, develop a long-term presence on and around the Moon, and pave the way for humanity to set foot on Mars. *Thanks for watching science fact. *Follow for more updates and upcoming videos.

NASA will begin coverage of the Orion spacecraft performing the first of two maneuvers to exit lunar orbit, called the distant retrograde orbit departure burn, on Dec. 1 at 4:30 p.m. EST (21:30 UTC). The burn is scheduled to occur at 4:53 p.m. EST (21:53 UTC). Orion launched aboard the Space Launch System (SLS) rocket at 1:47 a.m. EST (06:47 UTC) on Nov. 16 from historic Launch Complex 39B at NASA’s Kennedy Space Center. Orion entered a distant retrograde orbit on at 4:52 p.m. EST (21:52 UTC) on Nov. 25, where the spacecraft has been testing systems in a deep space environment. The Artemis I mission is the first integrated test of NASA’s deep space exploration systems: the Orion spacecraft, the SLS rocket, and Kennedy Space Center ground systems. *Thanks for watching science fact. *Follow for more updates and upcoming videos.

On Dec. 5, NASA will air the lunar flyby of the Orion spacecraft on its return trek toward Earth. Orion completed a burn Dec. 1 to exit a lunar orbit thousands of miles beyond the Moon, where engineers have been testing systems to improve understanding of the spacecraft before future missions with astronauts. The return powered flyby burn, in which the spacecraft will harness the Moon’s gravity and accelerate back toward Earth, is expected at 11:43 a.m. (1643 UTC) The spacecraft is expected to fly about 79 miles above the lunar surface at 11:42 a.m. (16:42 UTC) just before the burn. Orion launched aboard the Space Launch System (SLS) rocket at 1:47 am EST (0647 UTC) on Nov. 16 from historic Launch Complex 39B at NASA’s Kennedy Space Center. Orion entered a distant retrograde orbit on at 4:52 p.m. EST (2152 UTC) on Nov. 25, where the spacecraft has been testing systems in a deep space environment. The Artemis I mission is the first integrated test of NASA’s deep space exploration systems: the Orion spacecraft, the SLS rocket, and Kennedy Space Center ground systems. *Thanks for watching Science fact. *Follow for more updates and upcoming videos.

Discover the amazing Amazon River in South America which is the largest river by volume of water in the world known with famous Pink Dolphins. Sit back and relax while enjoying this scenic relaxation film captured on 4K ULTRA HD footage along with relaxing music. *Thanks for watching science fact. *Follow for more updates and upcoming videos.

In this Scenic Relaxation Film you'll be witness to The World's Largest Tropical Rainforest - The Amazon! Sit back and relax while enjoying this film with jungle sounds captured on 4K ULTRA HD footage along with relaxing music. *Thanks for watching science fact. *Follow for more upcoming videos and updates.

In this Scenic Relaxation Film you'll be witness to The World's Largest Tropical Rainforest - The Amazon! Sit back and relax while enjoying this film with jungle sounds captured on 4K ULTRA HD footage along with relaxing music. *Thanks for watching science fact. *Follow for more upcoming videos and updates.

"Blue Whisper" immerges into the ocean's fascinating underwater world and gets to the bottom of a widely unexplored field of underwater science: The communication amongst fish. The documentary accompanies a team of specialists to overwhelmingly beautiful coral reefs, ancient shipwrecks in the Mediterranean Sea and sunken submarines that are clouded in secrecy, to explore the versatile forms of underwater communication. What language do fish use? Do they make sounds? Do they have a body language? And what role do colors play? With the aid of complex underwater video- and audio- equipment those and further questions are answered during a suspenseful journey around the world. *Thanks for watching science fact. *Follow for more upcoming updates and videos.

This explains each interior area, crew living quarters, and scientific equipment. *Thanks for watching science fact. *Please follow for more upcoming videos and updates.