Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.

Leaving the solar system behind, this video dives into the staggering distances between stars, galaxies, clusters, and ...

This rogue star has been traveling the Universe. And now, it's finally entering our Solar System. But this isn't just any ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

In 2026, there will be journeys to the moon and Mars, new visions of the cosmos and a solar eclipse that might be worth ...

Most planets are part of a star system of their own – but some go their own way, and they have remained largely mysterious ...

Interstellar comet 3I/ATLAS showed measurable water activity after passing the Sun, observed by SOHO’s SWAN instrument, ...

Kicking off the year’s cosmic wonders is the moon, drawing the first astronauts to visit in more than 50 years as well as a ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Oceans hiding within the crusts of distant moons are tantalizing targets for scientists looking for life beyond Earth ...