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A rocket more powerful than any other flying today is scheduled to blast off Tuesday for the first time, if all goes well.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

LULU GARCIA-NAVARRO, HOST:

A star-forming region called the Tarantula Nebula contains more really massive stars than scientists had predicted.

The discovery, reported in the journal Science, could shake up astrophysicists' ideas about how massive stars have shaped the universe.

Even very young babies can tell the difference between someone who's helpful and someone who's mean — and lab studies show that babies consistently prefer the helpers.

But one of humans' closest relatives — the bonobo — makes a different choice, preferring to cozy up to the meanies.

That's according to experiments described Thursday in the journal Current Biology, by scientists who wanted to explore the evolutionary origins of humans' unusually cooperative behavior.

Copyright 2018 NPR. To see more, visit http://www.npr.org/.

LAUREN FRAYER, HOST:

This is Lauren's log, stardate December 31, 2017. Captain Lulu Garcia-Navarro is away, but we continue the mission to explore matters of space, the stars and the universe.

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