A Blue Moon Halo over Antarctica
Have you ever seen a halo around the Moon? Such 22 degree rings around the Moon — caused […]
NASA
A Sagittarius Triplet
These three bright nebulae are often featured in telescopic tours of the constellation Sagittarius and the crowded starfields […]
HCG 87: A Small Group of Galaxies
Sometimes galaxies form groups. For example, our own Milky Way Galaxy is part of the Local Group of […]
Curiosity s View
By planet Earth’s calendar, the Curiosity Mars Rover reached its 3rd anniversary on the surface of the Red […]
Full Earth, Full Moon
The Moon was new on July 16. Its familiar nearside facing the surface of planet Earth was in […]
Stereo Pluto
These two detailed, true color images of Pluto were captured during the historic New Horizons flyby last month. […]
X ray Echoes from Circinus X 1
Circinus X-1 is an X-ray binary star known for its erratic variability. In the bizarre Circinus X-1 system, […]
Virgo Cluster Galaxies
Well over a thousand galaxies are known members of the Virgo Cluster, the closest large cluster of galaxies […]
A Proton Arc Over Lake Superior
The setting had been picked out — all that was needed was an aurora. And late last August, […]
Apollo 17 at Shorty Crater
On the Moon, it is easy to remember where you parked. In December of 1972, Apollo 17 astronauts […]