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Do you think you know the Solar System? Here’s a fact about each planet that might surprise you when you see it!

There was a lot of hype and a lot of nonsense, but also some profoundly major advances. Here are the biggest ones you may have missed.

There are some 26 fundamental constants in nature, and their values enable our Universe to exist as it does. But where do they come from?

Our nearby Ring Nebula, with JWST’s eyes, shows evidence for planet formation. Will the Sun eventually destroy, and then replace, the Earth?

A Harvard astronomer went to the bottom of the ocean, claiming he recovered alien technology. But what does the science actually indicate?

At extremely close distances to their stars, even rocky planets can be completely disintegrated. We’ve just caught our first one in action.

This technological feat changes our cosmic history.

The James Webb Space Telescope (JWST) will study many dangerous cosmic phenomena, knowledge of which may help save humanity.

First ‘Oumuamua, then Borisov, and now ATLAS have shown us that interstellar interlopers are real. Here’s what the newest one teaches us.

More than two years after JWST began science operations, our Universe now looks very different. Here are its biggest science contributions.

A conversation with an advanced alien species is likely to be simple and to take 1,000 years. It might also be dangerous.

Pluto failed to meet the definition of a planet, but some astronomers think there might be a legitimate Planet 9 out there.

Most potentially hazardous asteroids remain unidentified. NEO surveyor could change that, but only if it’s funded, and soon.

Peaking on the night of August 11/12, up to 100 bright meteors per hour will be visible. Here’s how to make the most of it.

All the stars, stellar corpses, planets, and other large, massive objects take on spherical or spheroidal shapes. Why is that universal?

65 million years ago, an asteroid strike caused the 5th great mass extinction. Could we save Earth, today, from a similar event?

Massive objects like black holes, stars, and rogue planets routinely pass near our Solar System. An ensuing comet storm could destroy us.

In just its first 10 hours of observations, the Vera Rubin observatory discovered more than 2000 new asteroids. What else will it teach us?

The Moon is the most likely place for evidence from the dawn of life on Earth to be preserved in cold storage.

From here on Earth, looking farther away in space means looking farther back in time. So what are distant Earth-watchers seeing right now?

Each year in mid-August, Earth plows through the debris stream of an enormous comet, creating the Perseids. 2023’s show will be magnificent!

The recently discovered Oort cloud comet, Bernardinelli–Bernstein, has the largest known nucleus: 119 km. Here’s what it could do to Earth.

Newborn stars are surrounded only by a featureless disk. Debris disks persist for hundreds of millions of years. So when do planets form?

How did the troughs form?

Compared to Earth, Mars is small, cold, dry, and lifeless. But 3.4 billion years ago, a killer asteroid caused a Martian megatsunami.

Yes, NASA’s Perseverance rover found organics on Mars. So did Curiosity. Unfortunately, that doesn’t mean anything in the search for life.

In all the known Universe, Earth is the only planet known to have native life. What should guide us in expanding humanity beyond our world?

If there are human-sized creatures walking around on other planets, would we be able to view them directly?

And the one step we can take to show extraterrestrials we’re figuring it out. Every year, Earth’s meteor showers accomplish two important tasks. This composite photograph shows a large number of […]

In the largest star-forming region close to Earth, JWST found hundreds of planetary-mass objects. How do these free-floating planets form?