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Pine Island iceberg under midnight sun
Satellite view of iceberg B-44 on December 15, near midnight.
December 29, 2017
See 3 planets in a line before sunrise
Draw an imaginary line from the red planet Mars through the king planet Jupiter to find elusive Mercury near the sunrise point on your horizon.
December 29, 2017
Scientists expect 1st direct black hole image soon
This was the most popular post at EarthSky this week, and no wonder. It's exciting! Scientists expect the 1st-ever direct image of a black hole's event horizon, soon.
December 28, 2017
Filament points to Milky Way black hole
A recently discovered giant filament - 2.3 light-years long - points toward Sagittarius A*, the supermassive black hole at our galaxy's heart.
December 28, 2017
Sorry cat-lovers: New study says dogs are smarter
The study - from a self-confessed dog lover - counted cells in animals' brains associated with thinking, planning and complex behavior.
December 28, 2017
Bright meteors of 2017, over Tucson
This compilation of images from Eliot Herman represents the best of more than 100,000 photos of meteors over Tucson, captured on 2017 nights.
December 28, 2017
Bellatrix, in Orion, means Female Warrior
You might know Rigel and Betelgeuse, Orion's brightest stars. Now meet 2 more stars in Orion, called Bellatrix and Saiph.
December 28, 2017
Oumuamua’s path in our solar system
You’ve probably read about this unprecedented visitor from interstellar space. Astronomer Guy Ottewell thought you’d like to see its trajectory through our solar system.
December 27, 2017
2017 sky optics, Hong Kong
Even if you stay in one location - and a major city to boot - it's amazing what you can see just by looking up.
December 27, 2017
