Astronomers have witnessed the early formation of a solar system for the first time.

The largest Mars meteorite ever found on Earth was sold at a Sotheby's auction in New York on Wednesday for $5.3 million.

The Martian rock, known as NWA 16788, is 70% larger than the next biggest piece of Mars that has been recovered, according to the auction house.

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star

There could be many more satellite galaxies orbiting the Milky Way than previously thought or observed, according to astronomers.

The first astronauts in more than 40 years from India, Poland and Hungary are back on Earth

ABC News contributor and astrophysicist Hakeem Oluseyi discusses the significance of the two-week mission as NASA plans to retire the International Space Station.

The meteor shower occurs annually from about July 17 to Aug. 23, typically peaking in mid-August, according to the American Meteor Society.

The International Space Station's first visitors from India, Poland and Hungary are headed back to Earth

The piece of Mars is 54 pounds and the estimated auction price is $2 million to $4 million.

Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth

The most powerful telescope ever launched into space uncovered a cluster of forming stars within the "toe beans" of the Cat's Paw Nebula.

The full moon will rise in the United States on Thursday, July 10, at 3:37 p.m. ET.

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain life.

Blue Origin launched its 13th human mission to the edge of space on Sunday, sending six civilian astronauts past the Karman line and back in a little over 10 minutes.

Witnesses across Georgia and South Carolina captured what appears to be bright flashes of light darting the sky. NOAA’s Geostationary Lightning Mapper detected the flashes as possible meteors.

The National Oceanic and Atmospheric Administration said it found multiple bright flashes of light during the day on Thursday on its lightning flash tracker.

Drivers across the Southeast were startled when they saw a mysterious fireball streak across the sky. Many reported shaking and hearing a sonic boom.

Four private astronauts from the U.S., India, Poland and Hungary are on board the SpaceX Dragon spacecraft, which is heading to the International Space Station for a 14-day mission.

After several postponed launches, Axiom Space's four private astronauts are finally on their way to the International Space Station.

The Rubin telescope, sitting at the top of the Cerro Pachon mountains in Chile, captured galaxies 55 million lightyears away.

During a routine static fire test, SpaceX Starship 36 erupted in a series of massive explosions rattling homes miles away in Texas.

Astronomers have located a rare exoplanet on the edge of the Milky Way.

The full moon rose over the United States on Wednesday, June 11.

A Chicago man captured the stunning moment a helicopter and plane passed simultaneously in front of June's radiant "strawberry moon."

The new panorama of Mar’s Arsia Mons was captured on May 2.

A NASA orbiter has captured a stunning image of a volcano on Mars for the first time.

Axiom Space will attempt to send its fourth crew to the International Space Station as part of its AX-4 mission on Wednesday.

Space science experts told ABC News SpaceX has been essential to NASA’s missions and the breakdown of a relationship would leave a hole that would be hard to fill.

A private space exploration company based in Japan, ispace, wants to see people living on the moon by 2040.

A private space exploration company based in Japan, ispace, wants to see people living on the moon by 2040.

Rochester Institute of Technology astrophysics professor Jeyhan Kartaltepe led the team behind the project and explains why this new view matters.

After launch, an apparent propellant leak entered its suborbital trajectory left Starship spinning and mission control unable to control the craft.

A failed Soviet-era spacecraft that became trapped in Earth’s orbit by mistake more than 50 years ago is expected to make a crash landing back on Earth early Saturday.

The remains of a decades-old Soviet era spacecraft, Kosmos-482, have returned to Earth. It was supposed to go to Venus in 1972, but a rocket malfunction left it stranded in Earth’s orbit. 

A Soviet-era spacecraft that was supposed to explore Venus is expected to crash into Earth some time tonight or tomorrow. David Muir reports.

A meteor shower known for the speed of its shooting stars is expected to peak on Monday, according to astronomers.

A meteor shower known for the speed of its shooting stars is expected to peak on Monday night, according to astronomers.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say.

It is the first all-female spacewalk since 2023 and just the fifth in NASA's history.

Two NASA astronauts steppes outside the International Space Station on Thursday to take part in U.S. Spacewalk 93, NASA's fifth-ever all-female spacewalk.

An exoplanet discovered in 2020 contains the coldest temperatures ever measured on a planetary body, according to scientists.

Veteran astronaut Don Pettit conducted hundreds of hours of research and captured over half a million photos during his ISS mission.

Nikku Madhusudhan, a professor of astrophysics and exoplanetary science at the University of Cambridge, discusses the discovery of hints of life found on the distant planet K2-18b.

ABC News' Stephanie Ramos spoke with Cambridge University astrophysicist Dr. Nikku Madhusudhan on a possible massive planet discovery called K2-18b and its strong evidence of extraterrestrial life.

NASA astronaut Don Pettit celebrates his 70th birthday with a spectacular return from the International Space Station after 220 days in orbit.

The discovery was made by a Cambridge research team looking at planet K2-18b while using Nasa's James Webb Space Telescope.

ABC News’ Linsey Davis spoke with former NASA astronaut, Susan Kilrain, about the iconic but brief all-women crew space mission and what it means for the future of space tourism.

An all-female flight crew, including Katy Perry, Gayle King and Lauren Sanchez blasted into space aboard Jeff Bezos' Blue Origin New Shepard rocket, experiencing zero gravity before parachuting home.