Why the July 27 lunar eclipse will be the longest one this century
For one hour and 43 minutes, the moon will turn a blood red orange as it passes behind Earth's shadow. This celestial event will be the longest lunar eclipse of the 21st century, giving stargazers in Africa, the Middle East and central Asia ample time to view a rare show of cosmic coincidence.
Super-Earth exoplanet discovered orbiting a star just 6 light-years from our sun01:29
Could this cosmic interloper be an alien spacecraft? Neil deGrasse Tyson isn’t so sure03:52
'A bumpy ride ahead': Astronomer Martin Rees on humanity's chance of surviving the 21st century03:48
The search for alien life in Nevada05:09
Deep Fakes: How they’re made and how they can be detected04:14
Mount Etna is sliding into the sea. It could be catastrophic02:07