This beautiful stellar jewel-box – a tightly packed cluster of stars - is one of the few places in our galaxy where astronomers think stars can actually collide.
Although we can't see it from the outside, astronomers know our galaxy has an overall spiral structure. For years, they've been trying to pin down the number of Milky Way spiral arms. Now they say ... 4.
An astronaut aboard the ISS prepares one of her favorite meals - quinoa salad with tomato, mackerel and leek cream in a warm tortilla. Here's how it's done in space.
Over 3,800 meters (12,500 feet) below the surface, researchers found towering white chimneys venting scalding hot water, colonized by animals that thrive in the toxicity and heat.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.