Strange plumes have been spotted high in the Martian atmosphere that have, so far, defied explanation. Now scientists think space weather is to blame.
The mysterious phenomenon would show up only during daylight hours, vanishing at night.
A distant tailless comet hails from inner solar system, but as its lack of ice shows, it's likely an ancient body, hailing from when the planets were being born.
How did these odd scars form on the icy world?
Was the 1977 'Wow!' signal communications from an alien civilization? Or was it interference from a passing comet? In 2017, we may finally have an answer.
If it is out there, the hypothetical Planet 9's gravity probably isn't impacting the orbit of NASA's Saturn mission.
The true nature of mysterious fast radio bursts (FRBs) may not have been revealed after all.
Astronomers have found a monster black hole, some 17 billion times more massive than the sun, in a modestly sized galaxy, raising suspicions that supermassive black holes may be much more common than originally thought.
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