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How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here are all of your questions answered.

Tissue samples sent to the International Space Station reveal what can happen to astronauts on long-term missions.

DEALS We've rounded up the best streaming deals all in one place, so you can save big and stay glued to the couch.

Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.

The latest aurora forecast for tonight help you make sure you're in the right place at the right time to see the northern lights.

A collection of more than 50 pieces of memorabilia previously owned by Sally Ride, the first American woman to reach space, sold at auction last week for more than $145,000.

Surprising colors and stunning features are captured in a new image of Mars' surface.

In the latest attack on science by the Trump administration, researchers at the National Snow and Ice Data Center will no longer receive data from a fleet of military satellites.

On July 5, 2015, a Russian Progress cargo ship successfully docked with the International Space Station, returning Russia's resupply ship to service after a failure.

Sprites have been known to form above intense thunderstorms.