NASA is marking the 20th anniversary of the space shuttle Columbia tragedy with somber ceremonies during its annual tribute to fallen astronauts

Tuesday marks one year since the James Webb Space Telescope reached its destination, orbiting 1 million miles away from Earth.

Today marks one year since the James Webb Space Telescope reached its destinations. Here are some of the most striking images that NASA has released

Plus, lucky dog "Seamus" is rescued and reunited with his family, and the year of the Rabbit is being celebrated as the Lunar New Year throughout the world.

Aldrin was one of the first people to walk on the moon.

It was the first spacewalk for the NASA astronaut.

NASA had previously discovered three other planets in the same system, one of which was also in the habitable zone.

Scientists from NASA announced Tuesday that they discovered an Earth-size planet orbiting its star's habitable zone.

After almost 40 years in orbit, it plunged harmlessly through the atmosphere.

Most of the retired NASA satellite will burn up, but some pieces are expected to survive.

Two astronauts conducted the latest of several planned spacewalks to install solar arrays to the exteriors of the floating laboratory.

It could be the end of the red dusty line for NASA's InSight lander on Mars

A NASA rover on Mars by chance had its microphone on when a whirling tower of red dust passed overhead last year and caught the sound

Astrophysicist Hakeem Oluseyi gives insight on the flight path, the future of Artemis missions and how they pave the way to manned missions to Mars.

According to NASA and SpaceX, this trip was just the first step in a plan to establish a long-term presence on the moon and send a crewed ship to Mars.

The unmanned spacecraft spent 25.5 days in space and journeyed 1.4-million miles around the moon, according to NASA.

Orion has reentered the atmosphere after a record-breaking month-long trip around the moon from Earth.

ABC News’ Martha Raddatz interviews NASA Johnson Space Center Director Vanessa Wyche on “This Week.”

ABC News’ Gio Benitez reports on NASA’s latest mission to the moon on “This Week.”

The spacecraft has concluded its 25-day voyage around the Moon and the un-manned capsule will re-enter the Earth's atmosphere Sunday afternoon.

Half a century after U.S. astronauts brought it back from the moon’s surface, a minute piece of extraterrestrial rock has finally reached its intended destination, the east Mediterranean island nation of Cyprus

ABC's Gio Benitez gets an exclusive look at the Orion capsule with splashdown just one week away.

Astrophysicist Hakeem Oluseyi breaks down what this scientific breakthrough could mean for future space exploration.

Vice President Kamala Harris welcomed French President Emmanuel Macron to share their nations’ joint accomplishments of space exploration at NASA’s headquarters in Washington, D.C.

NASA’s Orion spacecraft has gone where no spacecraft designed for human transport has gone before and ABC News’ Gio Benitez communicates with the spacecraft from Johnson Space Center in Houston, Texas

NASA's Orion capsule is now circling the moon in an orbit stretching tens of thousands of miles

NASA has released new images of the moon taken by the Orion spacecraft as the agency advances its Artemis mission to send humans back to the moon.

Mark Vande Hei and two Russian cosmonauts landed in Kazakhstan on Tuesday.

NASA has released new close-up images of the far side of the moon, taken from the uncrewed Orion spacecraft.

It’s the first time a capsule has visited the moon since NASA’s Apollo program.

After multiple delays, NASA's rocket Artemis I has finally blasted off. It is heading toward the moon to begin its 25-day mission.

The historic launch is the next step in NASA’s Artemis exploration program which could lead to sending astronauts to Mars.

NASA astronauts conducted a spacewalk outside the International Space Station. The spacewalk will prepare the future deployment of additional solar arrays for the station, according to NASA.

A two-hour launch window will open at 1:04 a.m. ET with splashdown expected on Dec. 11.

NASA’s Jim Free announced Friday that the uncrewed shuttle will launch on Wednesday, Nov. 16.

A newly launched cargo capsule ran into trouble with a solar panel after liftoff

NASA’s moon rocket is back on the pad for another launch attempt, following more repairs

The image from the Webb telescope captures young, bright-red stars within a billowing cloud of dust.

NASA on Wednesday released a new image from the James Webb Space Telescope of dust rings caused by two stars closely interacting with each other.

NASA officials said their mission to collide a satellite with an asteroid was a success and altered the space object's trajectory.

The mission late last month sent a spacecraft to collide with an asteroid.

The NASA mission late last month sent a spacecraft into collision with an asteroid.

Astrophysicist and science educator Hakeem Oluseyi discusses a historic SpaceX mission as four astronauts travel to the International Space Station.

The rocket successfully blasted off into orbit, making it the first mission to send a Native American woman to space.

The six-month mission aboard the International Space Station is commanded by Nicole Mann, the first Native American woman in space. Also on board are astronauts from the U.S., Japan and Russia.

The six-month long mission will send four astronauts to space aboard the SPACEX dragon capsule to the International Space Station.

Anna Kikina's presence on the mission shows that cooperation is continuing between the United States and Russia on the International Space Station despite Russia’s invasion of Ukraine.

The crew, comprised of two American astronauts, a Japanese astronaut and a Russian cosmonaut will lift off from Florida’s Kennedy Space Center.

NASA officials applauded their successful mission to test if they can divert the path of an asteroid.

The spacecraft successfully crashed into the rock at 14,000 mph.