Space
Scientists Say: Observable universe
No light will ever reach Earth from beyond this distant horizon of space.
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No light will ever reach Earth from beyond this distant horizon of space.
The Artemis astronauts are safely back on Earth. But they immortalized their historic voyage to the moon in these stunning photographs.
The astronauts had a front-row view of the lunar farside and the first eclipse ever seen from the moon.
This first human trip to the moon in more than 50 years will take four astronauts farther than anyone has gone before.
Hefty stars might have collapsed into “intermediate mass” black holes — the building blocks of supermassive ones, a teen’s research suggests.
Venus’ surface is hot enough to melt lead, studded with volcanoes and shrouded in clouds of corrosive acid.
It starts as a flash. Then comes the sonic boom. The boldest meteors often go out with a bang.
Scientists suspected Mars had these zaps but had never detected them — until now. NASA’s Perseverance rover recorded them generated by dusty gusts.
Weaving together the concepts of space and time allows scientists to understand gravity and more.
Only three interstellar objects have ever been spotted. Here’s what we know about them and why they’re so cool.