The Starliner spacecraft docked with the International Space Station and orbiting 262 miles above Egypt's Mediterranean coast on June 13. NASA says additional testing is needed before Starliner can return to Earth. NASA/AP hide caption
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Discovered in 2016, a roughly Earth-sized planet orbiting our nearest neighboring star might be habitable. This artist's impression shows a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system. ESO/M. Kornmesser hide caption
Could 3 Body Problem's aliens exist? The science behind Netflix's new hit
Boeing crew flight test astronauts Suni Williams and Butch Wilmore, center, pose with Expedition 71 flight engineers Mike Barratt, left, and Tracy Dyson, both NASA astronauts, in their spacesuits aboard the International Space Station's Quest airlock on June 24, 2024. /NASA via AP hide caption
The Chang'e 6 capsule landed in the Chinese province of Inner Mongolia on Tuesday. CCTV Screenshot by NPR hide caption
A red giant star and white dwarf orbit each other in this animation of a nova similar to T Coronae Borealis. NASA/Goddard Space Flight Center hide caption
A robotic arm at the International Space Station is seen releasing a pallet packed with batteries in 2021. NASA says a metal alloy stanchion from that flight equipment is what landed in a Florida home. NASA hide caption
A Florida family is suing NASA after a piece of space debris crashed through their home
Asteroid moonlet Dimorphos as seen by NASA's DART spacecraft 11 seconds before the impact that shifted its path through space, in the first test of asteroid deflection. Johns Hopkins University Applied Physics Laboratory/NASA hide caption
NASA's New Horizons spacecraft captured this high-resolution enhanced color view of Pluto on July 14, 2015. The image combines blue, red and infrared images taken by the Ralph/Multispectral Visual Imaging Camera. NASA/JHUAPL/SwRI hide caption
Pluto isn't a planet — but it gives us clues on how the solar system formed
The Boeing Starliner spacecraft prepares to dock with the International Space Station for the first time on June 6, 2024. (NASA via AP) NASA/AP hide caption
Astronaut Wendy B. Lawrence was aboard the the Space Shuttle Endeavour for the STS-67/ASTRO-2 mission when it launched March 2nd, 1995. NASA hide caption
From the physics of g-force to weightlessness: How it feels to launch into space
This picture, taken by Apollo 8 astronaut Bill Anders, is one of the most famous images ever photographed in space. It shows the earth rising against the barren lunar landscape on the first human mission to the moon in 1968. Bill Anders/NASA hide caption
SpaceX's mega rocket Starship launched from SpaceX's Starbase in Boca Chica, Texas on Thursday, June 6, 2024. Screenshot by NPR/SpaceX hide caption
Boeing's Starliner capsule lifted off from the Kennedy Space Center in Cape Canaveral, Fla. on Wednesday. It's the first time the capsule, powered by an Atlas V rocket made by United Launch Alliance, has flown people. Two NASA astronauts are on board for a day-long trip to the International Space Station. This test flight is years behind scheduled and billions of dollars over budget. MIGUEL J. RODRIGUEZ CARRILLO/AFP via Getty Images/AFP hide caption
The Hubble Space Telescope in orbit in 1999, just after a servicing mission by astronauts. NASA hide caption
Hubble will change how it points, but NASA says 'great science' will continue
This photo, provided on Jan. 12, 2019 by the China National Space Administration via Xinhua News Agency, shows the lunar lander of the Chang'e-4 probe in a photo taken by the rover Yutu-2. AP/China National Space Administration/Xinhua News Agency hide caption
A United Launch Alliance Atlas V rocket with Boeing's Starliner spacecraft aboard is rolled to the launch pad on Thursday ahead of the NASA's Boeing Crew Flight Test. NASA/Getty Images hide caption
The sun has gone through a rotation, and the active region that triggered a huge amount of aurora activity is once again pointing toward Earth — but not directly at it. GOES 16/Space Weather Prediction Center hide caption
A recent Russian space launch placed a satellite onto the same orbital plane as a U.S. satellite, the Pentagon says. Here, a Soyuz-2.1a rocket booster with the Soyuz MS-24 spacecraft sits at the launch pad at the Russian-leased Baikonur cosmodrome in Kazakhstan last September. Andrey Borodulin/AFP via Getty Images hide caption
Ed Dwight poses for a portrait to promote the National Geographic documentary film "The Space Race" during the Winter Television Critics Association Press Tour, Thursday, in February. Chris Pizzello/Invision/AP hide caption
Boeing's Starliner capsule atop an Atlas V rocket is seen at Space Launch Complex 41 at the Cape Canaveral Space Force Station on May 7, a day after its mission to the International Space Station was scrubbed because of an issue with a pressure regulation valve. John Raoux/AP hide caption
The Hubble Space Telescope in 2009, locked in a space shuttle's cargo bay, before the final repair work ever done. NASA/JSC hide caption
Private mission to save the Hubble Space Telescope raises concerns, NASA emails show
The Northern Lights fill the sky at the Bogus Basin ski resort in Boise, Idaho, on Saturday. Kyle Green/AP hide caption
Crosby Beach, Liverpool, England: The aurora borealis, also known as the northern lights, glow on the horizon at Another Place by Anthony Gormley. Peter Byrne/PA Images/Getty Images hide caption
NASA's Solar Dynamics Observatory captured this image of a strong solar flare on May 8, 2024. The Wednesday solar flares kicked off the geomagnetic storm happening this weekend. NASA/SDO hide caption