Exoplanet Giant Orbiting White Dwarf Star

Exoplanet Giant Orbiting Tiny White Dwarf

A giant exoplanet has been discovered orbiting a tiny white dwarf star only a quarter of the planet's size. That's right, the planet is far larger in size than its star. Find out why this matters to our search for life on other worlds. (4:30 min read)

Planet X

Is Planet X a Black Hole?

Scientists have been proposing a new "Planet X" in our solar system. Now two scientists suggest that it's a black hole. Find out why. (3:30 min read)