Add Yahoo as a preferred source to see more of our stories on Google. This is HOPS-315, a baby star where astronomers have observed evidence for the earliest stages of planet formation. These ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

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