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In 2023, data from the James Webb Space Telescope soured hopes that TRAPPIST-1 c had an atmosphere. That disappointment might have been premature.

The ultimate multi-messenger astronomy event would have gravitational waves, particles, and light arriving all at once. Did that just occur?

Some nebulae emit their own light, some reflect the light from stars around them, and some only absorb light. But that’s just the beginning.

In 1957, humanity launched our first satellite; today’s number is nearly 10,000, with 500,000+ more planned. Space is no longer pristine.

The Universe has been creating stars for nearly all 13.8 billion years of its history. But those photons can’t match the Big Bang’s light.

Freethink’s weekly countdown of the biggest space news, featuring Starship’s second test flight, a new “dark mysteries” telescope, and more.

Each of our three nearest stars might have an Earth-like planet in orbit around it. Here’s what we’ll learn when we finally observe it.

The asteroid is expected to come within 140,000 miles of Earth — well inside the moon’s orbit.

The tiniest galaxies of all are the most susceptible to violence by their larger, bullying siblings. That’s why we need them in isolation.

Even with just a momentary view of our galaxy right now, the data we collect enables us to reconstruct so much of our past history.

An interview with Lisa Kaltenegger, the founding director of the Carl Sagan Institute, about the modern quest to answer an age-old question: “Are we alone in the cosmos?”

A young, nearby, massive star, whose protoplanetary disk appears perfectly edge-on, was just viewed by JWST, with staggering implications.

Astronomers see spiral and elliptical nebulae nearly everywhere, except by the Milky Way’s plane. We didn’t know why until the 20th century.

“I was stunned. Here in front of me was the original apparatus through which a new vision of the world was slowly and painfully brought to light.”

Such discoveries help researchers better understand the development of molecular complexity in space during star formation.

On Saturday, October 14, a solar eclipse crosses North and South America. Here are 4 quick, easy, low-tech activities for everyone to enjoy!

Ring galaxies are rare, but we think we know how they form. A new, early-stage version, the Bullseye galaxy, provides a new testing ground.

Almost all of the stars, planets, and interesting physics happens in the inner portions of galaxies. Is that conventional wisdom all wrong?

What are dark matter and dark energy? The large-scale structure of the cosmos encodes them both, with ESA’s Euclid mission leading the way.

The first tests of optical communications far from Earth will take place aboard the asteroid-bound Psyche spacecraft

Recent controversies bode ill for the effort to detect life on other planets by analyzing the gases in their atmospheres.

A recent measurement has simultaneously settled an ongoing scientific debate while puzzling scientists.

The full extent of the Andromeda galaxy, the nearest large galaxy to our own, has been entirely imaged with Hubble’s exquisite cameras.

Finding it at all was a happy accident. Examining it further may help unlock the secrets hiding within the earliest galaxies of all.

Launched in March, the PUNCH mission has viewed two incredible coronal mass ejections, tracking them farther from the Sun than ever before.

Galactic activity doesn’t just arrive when supermassive black holes feast on matter. Before, during, and after all create fascinating signs.

Despite many ultra-distant galaxy candidates found with JWST, we still haven’t seen anything from the Universe’s first 250 million years.

Astronomer Adam Frank reflects on some responses to his recent appearance on the Lex Fridman Podcast.

Finding life beyond our Solar System requires understanding its host planet.

There are only a precious few minutes of totality during even the best solar eclipses. Don’t waste yours making these avoidable mistakes.