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A New Year’s Aurora and SAR Arc

…on January 1, a place a few days before its closest approach to the Sun. The first of the two red skyglows, on the left, was a red aurora, complete…

Young Stars, Dark Nebulae

…Taurus molecular cloud complex some 450 light-years away. Millions of years young and still going through stellar adolescence, the stars are variable in brightness and in the late phases of…

An Evening Sky Full of Planets

composite panorama captured on 2 January, planet Earth is represented by Mount Etna’s lower Silvestri Crater. Of course Earth’s early evening skies are full of planets for the entire month…

Titan Touchdown: Huygens Descent Movie

…two hours after arriving, Huygens plummeted toward Titan’s surface, recording at first only the shrouded moon’s opaque atmosphere. The computerized truck-tire sized probe soon deployed a parachute to slow its…

The Variable Nebula NGC 2261

…vary? NGC 2261 is composed of a dusty reflection nebula fanning out from the star R Monocerotis. The leading variability explanation holds that dense knots of obscuring dust pass close…

Milky Way over the Australian Pinnacles

…of our Milky Way Galaxy. Many famous stars and nebulas are also visible in the background night sky. The featured 29-panel panorama was taken and composed in 2015 September after…

Auroral Hummingbird over Norway

Copyright: Mickael Coulon Is this the largest hummingbird ever? Although it may look like a popular fluttering nectarivore, what is pictured is actually a beautifully detailed and colorful aurora, complete…

The Spider and the Fly

…reflection nebula. About 10,000 light-years distant, both nebulas harbor young star clusters. For scale, the more compact NGC 1931 (Fly) is about 10 light-years across. The featured deep image, captured…

Reflections on VdB 31

…this well-composed celestial still life with dark, obscuring clouds B26, B27, and B28, recorded in Edward E. Barnard’s 1919 catalog of dark markings in the sky. All are these nebulae…

Parhelia at Abisko

…The parhelia are caused by hexagonal ice crystals suspended in the hazy atmosphere that reflect and refract sunlight. Commonly seen in winter and at high latitudes, the bright parhelia lie…

SpaceX Rocket Launch Plume over California

…Sun. The Falcon 9 rocket successfully delivered to low Earth orbit 23 Starlink communications satellites. The plume from the first stage is seen on the right, while the soaring upper…