MUFON

 Six hundred UFO sightings worldwide were reported to MUFON in October.

Of those, 479 were in the United States.

Perseverance

 Perseverance has spotted layered rock in Jezera Crater.

The layered rock suggests the presence of liquid water in the past.

Early Water

 Astronomers have found traces of water vapor in a galaxy nearly 13 billion years ago.

It's the oldest such find yet.

Comets

 Scientists think one or more huge comets exploded over what is now the Atacama Desert roughly 12,000 years ago.

There is also evidence that a large body-- possibly a comet-- slammed into Greenland at about that same time.

SPS

 Some researchers say space-based solar power could be with us within a decade.

That cou3d be a game-changer,

Comet 29P

 Comet 29P is erupting unpredictibly.

A team of amateur and professional astronomers is trying to understand how.

Camel

 Astronomers have found three examples in other galaxies of huge explosions that appear suddenly in the visuble spectrum and disappear in weeks, not years.

The latest one is called "the Camel."