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.
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.
Astronomers want to know the source — and importance — of these faint, fast-moving clouds that zoom beyond and toward our Milky Way’s disk.
No one knows exactly what this stuff is, but it’s shaping our universe on the largest scales.
Equipped with the world’s largest digital camera, this new telescope is poised to help solve some of the universe’s biggest mysteries.
Earth’s noise and light pollution can make it hard to detect signs of life on other planets. The solution? Telescopes that use the moon as a shield.
Computer models show that a star's tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.
Astronomers have captured polarized light coming from the Milky Way’s supermassive black hole. This offers insight into its magnetic fields.