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Did our solar system form in a bubble around a giant star?
And now ... a big bubble theory. Scientists are discussing the possibility that our solar system formed in wind-blown bubbles around a giant, long-dead star.
January 3, 2018
Next New Horizons flyby will happen a year from today
The New Horizons flyby of Kuiper Belt object 2014 MU69 - a year from today, on January 1, 2019 - will be the most distant in the history of space exploration.
January 1, 2018
Top 7 EarthSky stories of 2017
Here are 7 of the most-viewed news and feature stories of this past year.
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
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
Fossils suggest a universe filled with life
Evidence of life processes found in fossils in 3.5-billion-year-old rocks. Scientists say this work suggests life in our universe is widespread.
December 26, 2017
X-ray image shows newly born elements
The elements that make up our bodies and everything around us are born inside stars. This new X-ray image shows them being released into space.
December 24, 2017
SpaceX launch wowed many, scared some, in SoCal
SpaceX Falcon 9 launch created an eerie display in the night sky over southern California on the night of December 22. Photos and video here.
December 23, 2017
Is the star RZ Piscium eating its planets?
Astronomers knew this star was "winking," or dimming erratically. They thought it might be young. Now they think RZ Piscium might be more evolved than our sun, and hungry.
December 22, 2017
