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One measure of an extraterrestrial world’s potential for supporting life is the presence of water. The Neptune-size HAT-P-11b fits that criterion.
The smashup of four clusters of galaxies has sent a super-hot jet of charged particles spewing 2.5 million light-years into space!
On a planet far, far away, a single pass around its sun may seem to last forever.
Much like the lens on a camera, the intense gravity of a newfound white dwarf bends light. In this case, it is distorting light emitted by the star it orbits.
An unusually circular gas remnant of a dead star appears behind a star that’s still burning bright. When viewed from Earth, the pair resembles a sparkling diamond ring.
It’s too small to be a planet. Yet this planet wannabe still resembles Saturn-like giants. It’s the smallest solar system inhabitant to, like them, host rings of orbiting ice.
Distant galaxy plows through cluster of others, with baby stars in tow
It’s the first time astronomers have ever detected a cluster of stars moving collectively at such speed.