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This illustration shows the DART spacecraft approaching the two asteroids,

Move over, Bruce Willis: NASA crashed into an asteroid to test planetary defense

NASA successfully crashed a spacecraft into an asteroid in a test of planetary defense. Now it will determine whether the mission was able to alter the asteroid's course.
a bright star on black background

The James Webb Space Telescope is working as well as astronomers dreamed it would

Picture perfect: Mission managers say the telescope's mirror segments have been aligned and have focused on single stars, a critical milestone, and the telescope is working flawlessly.
An image of a satellite in front of a bright circle.

Astronomers find a new planet that’s mostly made of iron

NASA's TESS telescope finds a small, iron-rich planet which could help explain the origins of Mercury, the innermost planet in our solar system
An illustration of the DART spacecraft approaching two asteroids.

In a first test of its planetary defense efforts, NASA’s going to shove an asteroid

NASA is about to launch the first mission of its new planetary defense office. A spacecraft will attempt to knock a small asteroid off course by ramming into it.
Two giant whales under water near a raft.

The biggest whales can eat the equivalent of 80,000 Big Macs in one day

Scientists have gotten the best estimates yet of exactly how much baleen whales, the largest animals on the planet, can consume in one day. Their caloric intake is mind-boggling.