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NASA is creating a planet habitability index, and Earth may not be at the top. With our current data, ranking habitability is guesswork.

The primary causes of global climate change are all due to human activity. Adding aerosols to our atmosphere only exacerbates the problem.

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

When the Hubble Space Telescope first launched in 1990, there was so much we didn’t know. Here’s how far we’ve come.

With its first view of a protoplanetary disk around a newly forming star, the JWST reveals how alone individual stellar systems truly are.

A wave of innovation is coursing through the nuclear industry — but ingrained opposition is the biggest roadblock.

Google co-founder Sergey Brin’s airship startup hits a major milestone.

On Earth, our particle accelerators can reach tera-electron-volt (TeV) energies. Particles from space are thousands of times as energetic.

Coming from just 280 million years after the Big Bang, or 98% of cosmic history ago, this new, massive galaxy is a puzzle, but not a mirage.

Somewhere out there in the Universe is the heaviest neutron star, and elsewhere lies the lightest black hole. Where’s the line between them?

It took nearly 400,000 years, after the Big Bang, to first form neutral atoms. The imprints from that early time can now be seen everywhere.

The most famous Hubble images show glittering stars and galaxies amidst the black backdrop of space. But more was captured than we realized.

Barnard’s star, the closest singlet star system to ours, has long been a target for planet-hunters. We’ve finally confirmed it: they exist!

On July 12, 2022, NASA will release the first science images taken with the James Webb Space Telescope. Here’s what to hope for.

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.

Sooner or later, Earth is going to be hit by a large enough space object to cause significant damage to humanity. Stopping them isn’t easy.

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

Recasting the iconic Carrington Event as just one of many superstorms in Earth’s past, scientists reveal the potential for even more massive eruptions from the sun.

A history of othering, experimentation, and mystery.

The first of these devices is already on the market — the AI-powered Ray-Bans from Meta.

Forensics has reached the final frontier, and could be used to solve future space accidents—or crimes.

Experts believe they could cut the time it takes a rocket to reach Mars by up to 25%, shaving about two months off the trip.

1.9 billion years ago, a star’s explosive death created a black hole. Its light just arrived at Earth. But did it set a cosmic record?

60% of all potentially dangerous asteroids remain undetected.

In “Life As No One Knows It,” Sara Imari Walker explains why the key distinction between life and other kinds of “things” is how life uses information.

The midwest is particularly filled with them.

The surface and atmosphere is colored by ferric oxides. Beneath a very thin layer, mere millimeters deep in places, it’s not red anymore.

25 years ago, our concordance picture of cosmology, also known as ΛCDM, came into focus. 25 years later, are we about to break that model?

An effect called the “urban heat island” means that temperatures are often 10 degrees higher in cities, according to NASA.

On the largest of cosmic scales, the Universe is expanding. But it isn’t all-or-nothing everywhere, as “collapse” is also part of the story.