The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

Astronomers around the world have confirmed over 6,000 exoplanets, a milestone reached in September 2025. Billions more are waiting to be discovered.

“Based on the Juno radio occultations, we find that the size of Jupiter is smaller, more oblate, because at the equator, the ...

Fast-forward to today: we’ve gone from one lonely planet to a catalog of thousands. The pace is accelerating. In 2015, NASA’s Kepler telescope had confirmed its 1,000th exoplanet. By 2022, the tally ...

The first Artemis mission lasted 25 days and saw the launch of an uncrewed spacecraft in November 2022. It saw a spacecraft ...

Mysterious spherical droplets in meteorites aren’t just cosmic oddities. They’re evidence of planetary formation.

Over four billion years ago, the solar system was a wild and dangerous place. Swirling clouds of dust and gas slowly turned into the planets we know today.

Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...

The Trump administration wants steep cuts to science and technology, which fuels economic growth and bolsters national ...

The Administration wants steep cuts to science and technology, which fuels economic growth and bolsters national security.

Annette McGivney is a Colorado-based journalist who often writes for Arizona Highways Magazine; her article in the September ...