Size comparison with Earth, Neptune and the 18 newly discovered exoplanets. Wouldn't it be grand to see surface details on these new worlds? Read more.
It wasn't visible to the eye, but some telescope users in Earth's Southern Hemisphere caught it Saturday at closest approach. Now Northern Hemisphere observers will get their chance. Charts here, and check out this cool video!
Citizen scientists, NASA’s OSIRIS-REx mission needs your help choosing its sample collection site on asteroid Bennu ... and your extra eyes to look for whatever else might be interesting. Read more.
View at EarthSky Community Photos. | Dr Ski in Valencia, Philippines, captured this morning's moon and drew in a straight line to show you it's a waning moon, slightly smaller in phase than a half-lit moon at last quarter. See how the terminator - or line between light and dark on the moon - isn't exactly straight? Dr Ski wrote: "Five hours after last quarter, the sunset terminator is showing us a 47%-illuminated moon … " Thanks, Dr. Ski!
