Space
This cosmic oddity blurs the line between planet and moon
The object orbits a brown dwarf that orbits a star. Astronomers aren’t sure if it’s a planet, a moon — or something else entirely.
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The object orbits a brown dwarf that orbits a star. Astronomers aren’t sure if it’s a planet, a moon — or something else entirely.
In 2022, NASA smashed a spacecraft into an asteroid. New data show how that impact changed the orbit around the sun of this space rock — and its partner.
Tiny black holes in the early universe could explain why matter is common and antimatter is not.
No light will ever reach Earth from beyond this distant horizon of space.
A collapsed structure, which turned up in 30-year-old radar data from Venus, may be one of many underground caves.
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.
Astronomers want to know the source — and importance — of these faint, fast-moving clouds that zoom beyond and toward our Milky Way’s disk.