The Cat's Eye Nebula

2009-12-27

Three thousand light-years away, a dying star throws off shells of glowing gas. This image from the Hubble Space Telescope reveals the Cat's Eye Nebula to be one of the most complex planetary nebulae known. In fact, the features seen in the Cat's ...

A Graceful Arc

2009-12-25 Tony Hallas

The graceful arc of the Milky Way begins and ends at two mountain peaks in this solemn night sky panorama. The view was created from a 24 frame mosaic, with exposures tracking Earth and sky separately. In the final composition, northern ...

Gamma Cas and Friends

2009-12-24 Noel Carboni

Gamma Cassiopeiae shines high in northern autumn evening skies. The brightest spiky star in this rich and colorful Milky Way starfield, bluish Gamma Cas marks the central peak in the W-shaped constellation Cassiopeia. A hot, variable, and rapidly ...

December Sunrise, Cape Sounion

2009-12-23 Anthony Ayiomamitis

The Sun is a moving target. Its annual motion through planet Earth's sky tracks north and south, from solstice to solstice, as the seasons change. On December 21st, the solstice marking the first day of winter in the northern hemisphere and ...

Planetary Systems Now Forming in Orion

2009-12-22

How do planets form? To help find out, the Hubble Space Telescope was tasked to take a detailed look at one of the more interesting of all astronomical nebulae, the Great Nebula in Orion. The Orion nebula, visible with the unaided eye near the ...

Star Cluster R136 Bursts Out

2009-12-21

In the center of star-forming region 30 Doradus lies a huge cluster of the largest, hottest, most massive stars known. These stars, known collectively as star cluster R136, were captured above in visible light by the newly installed Wide Field ...

Tutulemma: Solar Eclipse Analemma

2009-12-20 Tunç Tezel

If you went outside at exactly the same time every day and took a picture that included the Sun, how would the Sun appear to move? With great planning and effort, such a series of images can be taken. The figure-8 path the Sun follows over the ...

Aurora Shimmer, Meteor Flash

2009-12-19 Bj?rnar G. Hansen,

Northern Lights, or aurora borealis, haunted skies over the island of Kval?ya, near Troms? Norway on December 13. This 30 second long exposure records their shimmering glow gently lighting the wintery coastal scene. A study in contrasts, it also ...

Southern Geminids

2009-12-18 Phil Hart

At least 34 meteors are included in this composite image as they rain through Australian skies during the annual Geminid Meteor shower. Dust particles strung out along the orbit of extinct comet Phaethon vaporize when they plow through planet ...

Mojave Desert Fireball

2009-12-17 Wally Pacholka

Monstrously bright, this fireball meteor lit up the Mojave Desert sky Monday morning, part of this year's impressive Geminid meteor shower. Seen toward the southwest over rock formations near Victorville, California, a more familiar celestial ...