Archive for January, 2010

Star-osaur

Credit: NASA, ESA, A. Aloisi (STScI/ESA), and The Hub­ble Her­itage (STScI/AURA)-ESA/Hubble Collaboration

To me, this image from NASA’s Hub­ble Space Tele­scope looks like a lum­ber­ing, long-necked Bron­tosaurus. Maybe a tur­tle with a long tail. What do you see in this image?

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Hazy Eye

Credit: NASA, ESA, and The Hub­ble Her­itage Team (STScI/AURA)

Col­or­ful shapes and lines play in this NASA Hub­ble Space Tele­scope image of the glow­ing plan­e­tary neb­ula IC 4593. Plan­e­tary neb­ula have noth­ing to do with plan­ets. In the 17th and 18th cen­turies, astronomers peer­ing through small tele­scopes look­ing for plan­ets would find objects that resem­bled plan­ets. Astronomers now know that these neb­ula are the last remains of dying Sun-like stars. As a star reaches the end of its life and the hydro­gen fuel needed to sus­tain fusion in its core runs out, the star expands into a red giant. Even­tu­ally, how­ever, the star col­lapses back on itself. This increases the tem­per­a­ture at its core and it explodes. Most of the star’s mate­r­ial is cat­a­pulted into space, form­ing a bub­ble around the star. This doesn’t hap­pen all at once but in stages.

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Galaxian Dragonfly

Credit: NASA, ESA, the Hub­ble Her­itage (STScI/AURA)-ESA/Hubble Col­lab­o­ra­tion, and A. Evans (Uni­ver­sity of Vir­ginia, Charlottesville/NRAO/Stony Brook University)

This galax­ian drag­on­fly, wings folded, rests deep in space. NASA’s Hub­ble Space Tele­scope clearly shows a pair of merg­ing, edge-on galax­ies called NGC 6670. Astronomers believe the two galax­ies have already had one close encounter with each other and are mak­ing a sec­ond pass. The galax­ies are just 50,000 light years apart. For com­par­i­son, our Milky Way Galaxy is 100,000 light-years wide and the near­est large galaxy to it is the Androm­eda Galaxy at two mil­lion light-years away.

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Of Snakes and Snails

Credit: NASA & ESA

The land­scape of Mars’ hazy Hel­las Basin twists and turns as if some­one spread warm peanut but­ter across it and let it ooze down­hill. Fea­tures, shown in this image from NASA’s HiRISE cam­era aboard the Mars Recon­nais­sance Orbiter, snake across the plain. Some shapes curl up in shell-like shapes. Explore the strange land­forms. Between some of the snake-like, flow­ing shapes, you can find sand dunes and craters.

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A Glowing Pencil

Credit: NASA, ESA and The Hub­ble Her­itage Team (STScI/AURA)

A stel­lar shock­wave from a super­nova 11,000 years ago forms a line in space remind­ing many observers on Earth of a pencil.

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Welcome

The ancient peo­ples saw pic­tures in the sky. From those pat­terns in the heav­ens, ancient sto­ry­tellers cre­ated leg­ends about heroes, maid­ens, drag­ons, bears, cen­taurs, dogs and myth­i­cal crea­tures…
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