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The long-standing debate over whether dinosaurs were more like birds or lizards is drawing to a close.
“Superhabitable” planets might be real, but Earth is probably as good as it gets.
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 […]
Over 50 years since humans last walked on the Moon, astronaut footprints and rover tracks are still visible. But they won’t last forever.
The classic picture of Jupiter’s great rocky core might be entirely wrong.
Newton thought that gravitation would happen instantly, propagating at infinite speeds. Einstein showed otherwise; gravity isn’t instant.
Perhaps we should be searching for “other Mercurys” rather than “other Earths.”
The stars, planets, and many moons are extremely round. Why don’t they take other shapes?
The far side of the Moon is incredibly different from the Earth-facing side. 63 years later, we know why the Moon’s faces are not alike.
Massive objects like black holes, stars, and rogue planets routinely pass near our Solar System. An ensuing comet storm could destroy us.
Even with six months’ notice, we can’t stop an incoming asteroid.
The giant impact theory suggests our Moon was formed from proto-Earth getting a Mars-sized strike. An exoplanet system shows it’s plausible.
The unconventional method could help astronomers better track meteorites that fall during the daytime.
A study looks at how to use nuclear detonations to prevent asteroids from hitting Earth.
If a large asteroid strikes Earth, it has the potential to release an enormous amount of energy, leading to local or even global catastrophes. The strike that led to the […]
The spikes in their mouths would have helped them catch squid or fish.
Even with all the recent impacts we’ve seen, it might be more “foe” than “friend” to us.
We have become the greatest threat to ourselves and to life on this planet. We need a set of agreed-upon safeguards to preserve our future.
The nature of civilizational threats has changed in a mere decade.
The most unique interloper into our Solar System has a natural explanation that fits perfectly — no aliens required.
If the past is any guide, things are going to take off quickly.
Mammals have a history stretching back 325 million years. To study that ancient history is to know our own origins.
We will have a better shot at improving our lives once we come to understand, know, and love the people we will one day become.
Since 1962, humanity has been sending messages into space with the intent to make contact with intelligent extraterrestrials. Are those efforts worth the risks?
Multiple lines of evidence — physical, chemical, and biological — must converge for scientists to conclude that alien life has been found.
Phobos and Deimos only have two explanations, and neither one adds up.
Comet A3, also known as Comet Tsuchinshan-ATLAS, has sprung to life since 2024’s last equinox. Here’s how to catch the show for yourself.