Robots

 NASA is looking at sending swarms of tiny robots to explore alien oceans.

They would be only about four inches long.

UFO

 According to reports, U. S. Navy fighter planes have been chased by "swarms" of UFOs on more than one occasion.

The incidents involved perhaps 100 unidentifieds.

Perspective

 The total worth of the world economy is something like $100 trillion.

Astronomers say one small world, Vesta. has about that much in precious metals alone-- gold, silver, and platinum.

Super Earths

 A new study finds that super Earths with  hydrogen and helium atmospheres could support life.

It also finds such worlds could be stable for billions of years.

Microbes

 Scientists say microbes in the cold, salty water of the Arctic could be similar to potential life on Mars.

Such life-- extremophiles-- have expanded our view of where life  can thrive.

Artemis 1

 Artemis 1 has passed a crucial test.

NASA is now preparing for launch.

Milky Way

 Astronomers have found a big star with its own dust disk near the center of the Milky Way.

They think it's a new formation.