That Night over Half Dome
APOD: 2014 May 2 - That Night over Half Dome
Halley Dust and Milky Way
APOD: 2014 May 9 - Halley Dust and Milky Way
Blue light from the star Rho Ophiuchi and nearby stars reflects more efficiently off this portion of the nebula than red light. The red and yellow regions shine primarily because of emission from the nebula's atomic and molecular gas. The dark brown regions are caused by dust grains which effectively block light emitted behind them. The Rho Ophiuchi star clouds are even more colorful than humans can see - the clouds emits light in every wavelength band from the radio to the gamma-ray.
The Colorful Clouds of Rho Ophiuchi
COMET ISON UPDATE: Reports of naked-eye sightings of Comet ISON are coming in from around the world. Experienced observers put the comet's magntitude at +5.5 on Nov. 16th. This means it is now fully 10 times brighter than it was only three days ago before the outburst. To the naked eye, ISON appears as a faint smudge of pale green light low in the pre-dawn sky. The tail is so long, he couldn't fit the whole thing in the field of view. It's 8 million kilometers behind the comet's nucleus.
A little wisdom from Calvin + Hobbes "If people sat outside and looked at the stars each night, I'll bet they'd live a lot differently."
New International Dark Sky Park Opens in Michigan; Only Nine Others in the World : TreeHugger
The Horsehead Nebula in Infrared from Hubble
The Grand Canyon in the American southwest stretches across this early evening skyscape. The digitally stacked sequence reveals the canyon's layers of sedimentary rock in bright moonlight. Exposed sedimentary rock layers range in age from about 200 million to 2 billion years old, a window to history on a geological timescale. A recent study has found evidence that the canyon itself may have been carved by erosion as much as 70 million years ago.
Grand Canyon Star Trails
The ‘Celestial Harp’- a theory that the movement of the stars and planets was related to music
Alaskan Moondogs ~~ Moonlight illuminates a snowy scene in this night land and skyscape made on January 17 from Lower Miller Creek, Alaska, USA. Sometimes called mock moons, a more scientific name for the luminous apparations is paraselenae. Analogous to a sundog or parhelion, a paraselene is produced by moonlight refracted through thin, hexagonal, plate-shaped ice crystals in high cirrus clouds.
The United States