New map from a 1989 spacecraft flyby gives us a glimpse of an unseen world.
Posts by Deborah Byrd
The blue hour – when the sun is some distance below the horizon, when the sky is deep blue and the landscape is suffused with bluish light – is a good time to take photos.
One of the first auroras of the 2014 autumn season appeared last night at northerly latitudes. Astronaut Reid Wiseman caught it from space. Photographer Göran Strand caught it from Sweden.
Will Mars and the moon will appear the same size on August 27, 2014? Nope.
Mission planners didn’t anticipate that Curiosity would be driving over an area on Mars that has sharp, pyramid-shaped rocks embedded in hard ground.
A black hole candidate known as M82 X-1 appears to have a mass of about 400 suns, making it one of only half a dozen suspected midsize black holes.
Venus and Jupiter are the brightest planets! Look east before dawn … closest planet-planet conjunction of 2014 August 18. Dazzling near moon August 22 and 23.
If you look in a dark country sky, you’ll easily spot the starlit band of our huge, flat Milky Way galaxy. Every star in our night sky lies inside this galaxy.
The constellation Cepheus represents a King, but looks like the stick house that children draw.
A collector dropped to Earth by the Stardust spacecraft may have contained the first known contemporary dust grains from outside our solar system.