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NASA's Les Johnson discusses solar sail propulsion and the upcoming Near-Earth Asteroid Scout and Solar Cruiser missions.

A spacecraft is about to begin its journey to crash into an asteroid on purpose. NASA’s Double Asteroid Redirection Test Mission, or DART, will deliberately impact a small asteroid called Dimorphos to deflect its orbit around a bigger object, Didymos. While this system presents no danger to Earth, an asteroid the size of Dimorphos would cause regional devastation if it hit our planet. DART will de...

James Webb Space Telescope Program Director Greg Robinson discusses NASA's largest and most powerful space science telescope ever constructed.

NASA's Marc Rayman discusses the legacy of the Dawn mission to the two most massive bodies in the main asteroid belt.

As NASA prepares to send astronauts to the Moon through the Artemis program, engineers are working on technologies that will give these explorers power – solar power, that is. In space, the harsh radiation and huge temperature changes make for a challenging environment. Lyndsey McMillon-Brown at NASA’s Glenn Research Center leads a study of solar cells made from a material called perovskite. This...

Our Sun lights up the solar system, but it’s as not calm or predictable as it may seem. Flares and explosions called coronal mass ejections unleash fast-moving particles and radiation that pose dangers to spacecraft and astronauts alike. Yaireska Collado-Vega leads a team at NASA’s Goddard Spacecraft Center that is studying the solar weather environment so that robots and people exploring space ca...

Mars Oxygen In-Situ Resource Utilization Experiment Principal Investigator Mike Hecht discusses the MOXIE technology demonstration that's generating oxygen on the Red Planet.

The planets of our solar system didn’t have such stable orbits a few billion years ago. The giant outer planets moved around chaotically in their orbits, and Uranus and Neptune may have even switched places. To get a more complete understanding of the full history of our solar system, NASA is sending a spacecraft called Lucy to investigate the Trojans, mysterious small objects that share an orbit...

Lucy Deputy Project Systems Engineer Mike Sekerak discusses the first space mission to study Jupiter's Trojan asteroid swarms.

Parker Solar Probe Mission Scientist Adam Szabo discusses NASA's journey to the Sun.

NASA Lessons Learned Program Manager Michael Bell discusses the agency's Lessons Learned Information System.

Janelle Wellons likes to say that she operates “fancy space cameras.” At NASA’s Jet Propulsion Laboratory, she creates commands that allow spacecraft to take valuable scientific data in our solar system and here at planet Earth. She also monitors the health of spacecraft, like a space robot doctor. She has worked on the Cassini mission to Saturn, the Lunar Reconnaissance Orbiter, Sentinel-6/Michae...

The creation of a market for supersonic commercial aircraft requires eliminating the sonic boom as a barrier for over land flight. NASA believes that changing that standard will open up the market for commercial supersonic transports. And that'll be a game changer for transcontinental and international flight.

NASA Convergent Aeronautics Solutions Project Manager Keith Wichman discusses mapping problems and solutions to transform aviation.

The laws of physics get very, very weird in the realm of particles too small for the eye to see. Aboard the International Space Station, an experiment called the Cold Atom Laboratory (CAL) is exploring how the universe works on a fundamental level by cooling atoms down to a billionth of a degree above the coldest temperature possible, absolute zero. By using special lasers and magnetic fields, CAL...

In honor of National Intern Day, Gravity Assist features Felicia Ragucci, an undergraduate at Dartmouth College who recently completed an internship with NASA’s History Office and the Office of the Chief Scientist. During her time at NASA, Felicia researched the history of the Neutral Buoyancy Simulator, an underwater training facility where astronauts practiced satellite repairs and other activit...

NASA Intern Nick Syracuse discusses his virtual internship experiences.

Venus is so close, and yet so far in terms of our understanding of its history and geology. Early in its history it may have had an ocean just like Earth’s, and volcanoes may be erupting there today. The only way to find out more is to take the latest technology to Venus and take a closer look! NASA is sending two missions to Venus this decade and participating in a European Space Agency mission t...

he idea for NASA’s Mars Ingenuity helicopter began at the Jet Propulsion Laboratory with a team of dedicated engineers who believed in something seemingly impossible. MiMi Aung served as the project manager on the helicopter, which has now achieved nine flights on Mars. In this episode of Gravity Assist, she shares the history of the helicopter project as well as her secrets for leading groups of...

What’s the difference between climate and weather? How does NASA monitor changing sea levels, melting glaciers, and other effects of climate change? Gavin Schmidt, NASA’s acting senior climate advisor, explains how rising temperatures lead to many complex changes both in the oceans and on land. When it comes to climate change: “It's real. It's us. But we still have choices about how bad we let it...

How do astronauts exercise on the International Space Station? How do they train underwater? Tara Ruttley, associate chief scientist for microgravity research at NASA Headquarters, has worked on a lot of fascinating projects to support the human spaceflight program. She also holds a Ph. D. in neuroscience and discusses how NASA studies the brain health of astronauts.

The Moon doesn’t have WiFi; neither does Mars. When future astronauts explore the surfaces of the Moon, Mars, or beyond, they’ll have big challenges communicating with Mission Control back on Earth. Darlene Lim at NASA Ames Research Center has been organizing expeditions on Earth that simulate science operations on other planetary bodies. Her team demonstrates how astronauts, scientists, and missi...

NASA spacecraft deliver stunning visual imagery of the cosmos, but we can also experience that data by turning it into sound. Kim Arcand at the Chandra X-Ray Observatory has helped develop many different sonifications including from galaxies, black holes, nebulae and more. Kim chats with NASA’s Chief Scientist Jim Green about her process of choosing instruments to represent different kinds of ligh...

“In some ways, spaceflight changes you forever,” says Ken Bowersox. Since he was 7 years old, Ken knew he wanted to become an astronaut. In his astronaut career, he participated in many exciting missions, including an extended stay on the International Space Station. What did he eat? How did he feel when he came home? Now a leader in NASA’s Human Exploration and Operations Mission Directorate, Ken...

Dana Bolles has worked in many exciting areas of NASA including assuring the safety of experiments and spacecraft going to space, managing environmental programs, and thinking about the possibility of life beyond Earth. In her journey as a space professional, a key challenge has been encountering other people’s assumptions about what she can and cannot do. Dana gets around in a wheelchair and uses...