But I like to look at the universe and consider all of the possibilities just awaiting discovery.

Follow scientists as they plan for the launch of NASA's James Webb Space Telescope, the world's most powerful space observatory.

Defying gravity

After years of delays, the Webb telescope is scheduled for launch December 18 from French Guiana.

It will study exoplanets in new ways and look deeper into the universe than ever before.

The telescope will look at varied objects, like stars and galaxies in the distant universe and planets in our own solar system, but many associate Webb with exoplanets.

No known planet like this exists in our solar system -- but they are the most common exoplanet in our galaxy.

But looking ahead, it's a question astronomers puzzle over: If Planet B exists, what might it be like?

It's just one of many reasons he wants to preserve this region, the largest biomass on our planet.

Discoveries

Take another look:

-- Floating junk in space is a growing problem, and this week it just got worse, sending space station crew scrambling for cover.

-- Over 1,000 manatees in Florida have died this year, the highest recorded number in decades, and the reasons may surprise you.

-- Archaeologists have uncovered what they believe is one of Egypt's lost "sun temples," dating from the mid-25th century BCE.