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Posts by
Editors of EarthSky
Find Mizar and Alcor in the Big Dipper
Early stargazers used this pair of stars as a vision test.
March 7, 2017
How do astronomers find exoplanets?
Stars are incredibly bright in contrast to any planets orbiting them. So finding exoplanets isn't easy. Here's how it's done.
March 6, 2017
California sediments pour into the sea
Drought plagued California and much of the American Southwest for nearly 5 years before this year. Now satellites see swollen rivers dumping sediments into the sea.
March 6, 2017
Cherry blossoms opening in Japan
In Japan at least, spring has sprung! Are you seeing signs of spring in your hometown?
February 24, 2017
Hints of a quiet, stray black hole
Theoretical studies predict 100 million to 1 billion black holes in our Milky Way galaxy. So far, astronomers have found about 60. A serendipitous discovery could lead to finding more.
February 13, 2017
Lake Travis
Image taken by our friends at Lake Travis Boat Rentals, the best place to go for Float On –lake travis boat rentals in...
February 7, 2017
Astronomy statement on US travel ban
The International Astronomical Union issued a statement on Monday in response to the U.S. executive order limiting travel from 7 countries. Read it here.
January 30, 2017
Visualize the sun’s path through Milky Way
Sirius is easy to find. It's the sky's brightest star on the sky's dome. When you look at it, you're looking backwards along our solar system's path through the Milky Way galaxy.
January 20, 2017
Largest, closest, highest sun
As seen from Rio de Janeiro, Brazil on January 4, Earth reached its closest point to the sun just 40 minutes before the sun reached its highest daily position in Rio`s sky ...
January 7, 2017
How long to orbit Milky Way’s center?
One journey of our sun and planets around the center of our Milky Way galaxy is sometimes called a cosmic year. That's approximately 225-250 million Earth-years.
November 28, 2016
