Posts by 

Deborah Byrd

Auroras over US and similar latitudes

A geomagnetic storm sparked a display of auroras on the night of April 9-10. Auroras sighted as far south as Colorado! The storm may intensify later today.

20 RR Lyrae stars with companions

Previously, only one RR Lyrae star - of many thousands known - was found to orbit in a double star system. Now astronomers have upped the tally by 2000%!

Update on Dawn spacecraft at Ceres

When will we see new images of the mysterious bright spots on Ceres' surface?

Scientists report seasonal changes on sun

Migrating bands of magnetic fields on the sun produce 2-year variations in solar activity as strong as those in the more familiar 11-year solar cycle.

Black holes don’t erase information

Since 1975, when Hawking showed that black holes evaporate from our universe, physicists have tried to explain what happens to a black hole's information.

Solar eclipses caused by Earth

Don't miss these images of eclipses of the sun caused by Earth, taken by various spacecraft on the moon, orbiting the moon, or returning from the moon.

See it! April 4, 2015 total eclipse of the moon

Thanks to all who posted at EarthSky Facebook and G+, and to all who submitted directly to EarthSky.org!

Airglow, bioluminescence, Milky Way rising

This photo has it all! It's a beautiful capture from Amit Kamble in New Zealand. Read his description below.

Hubble spies enigmatic quasar ghosts

Astronomers use the Hubble Space Telescope to examine 8 ethereal wisps orbiting distant galaxies, illuminated by blasts of radiation from quasars.

Astronomers witness a massive star’s birth

Two images of a very massive star, made 18 years apart, have given astronomers a real-glimpse of how massive stars develop early in their evolution.