The Great Meteor Procession 112 years ago

On February 9, 1913, lucky observers witnessed the Great Meteor Procession. Bright meteors soared horizontally across the sky for minutes at a time.

Meet Quipu, largest known structure in the universe

Quipu is the largest known structure in the universe. Find out more about its size, its influence on our universe and the fate that awaits it.

What if Bennu hit Earth? Simulations suggest catastrophe

Scientists have simulated what would happen if Bennu hit Earth. They said the effects could linger longer than those of the dinosaur-killing asteroid.

Aliens could detect Earth from 12,000 light-years away

Researchers looking for aliens say Earth might be detectable by ETs with tech like our own. Our civilization can be seen from 12,000 light years away.

Boom! Galaxy with 9 rings nicknamed the Bullseye

Scientists have discovered a galaxy with 9 rings around it. The rings are evidence of an earlier collision, and the rings are where new stars are forming.

Possible smallest exoplanet found … and it orbits a pulsar

Astronomers in Europe said they have discovered what might be the smallest exoplanet found so far. If real, it is smaller than our moon and orbits a pulsar.

KA-BOOM! Mars shakes when meteors smash into the planet

Astronomers have used AI to connect meteor impacts on Mars with marsquakes. They found that seismic waves can travel faster through the planet than expected.

Lightsails, and the audacious plan to reach the stars

Lightsails for star travel sound like the stuff of science fiction. But researchers at Caltech have been studying the properties of potential lightsails in the lab.

Is the moon geologically dead? Maybe not, says new evidence

Newly discovered lunar ridges have provided the first evidence of recent geological activity on the far side of the moon.

Asteroid Bennu reveals conditions for life, but with twist

Samples from asteroid Bennu brought back to Earth in 2023 contain molecular building blocks for life, evidence of ancient salty water, and something mysterious.