This coming July, Venus could plow through the dust generated by an asteroid breakup thousands of years ago, potentially ...

Learn how to calculate the Earth’s orbital speed using fundamental principles of orbital mechanics and gravity. This video walks through the key equations and physical reasoning that explain how Earth ...

An international team of astronomers led from regional Queensland finds an exoplanet 150 light-years away with a 50 per cent ...

If the universe is packed with trillions of stars and galaxies, the night sky should be glowing like the surface of the Sun. But it isn’t, and that simple fact created one of the greatest puzzles in ...

An early black hole feeds too fast—yet still blasts X-rays and radio jets.

Scientists watched a solar flare grow from tiny magnetic sparks into a violent plasma-raining avalanche on the Sun.

"This is one of the most exciting results from Solar Orbiter so far." ...

Mercury spill closes Sunspot Solar Observatory and nearby forest trails indefinitely, though officials say there is no public ...

Seeing a satellite zip across the night sky can be a fascinating sight. However, what may be spectacular for people on the ...

NASA is racing to contact a lost probe that mysteriously lost contact over Mars in early December. The $582.5 million Maven ...

Solar Orbiter observations show that a medium-class solar flare formed through cascading magnetic reconnection events, ...

A catastrophic failure occurred 73 seconds after liftoff as the shuttle emerged from “Max-Q,” the period of highest ...