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Posts by
Deborah Byrd
September equinox: All you need to know
The equinox is September 22. From around the world on the day of an equinox, the sun pretty much rises and sets due east and west.
September 16, 2021
Harvest Moon 2021: All you need to know
In 2021, the Northern Hemisphere's Harvest Moon falls on September 20, or less than 2 days before the autumn equinox.
September 15, 2021
Rerun of a supernova blast expected 2037
Astronomers expect to see a rerun of a supernova blast, whose light traveled 10 billion years to reach us, in about the year 2037.
September 15, 2021
Alpha Cephei, a fast-spinning star
Alpha Cephei, in the constellation Cepheus the King, is a bit of an enigma. It’s spinning so fast that it appears like a slightly flattened beach ball.
September 14, 2021
Wildfire threatens a SETI telescope in California
Wildfire threatens a SETI telescope. The Allen Telescope Array in California was built specifically for SETI. Scientists and engineers evacuated.
September 11, 2021
A new coral reef atlas you can explore
A new coral reef atlas is the first global, high-resolution map of its kind. It presents details on the composition and structure of the ocean floor.
September 10, 2021
Fomalhaut, loneliest star, near Jupiter and Saturn in 2021
Fomalhaut is known as the “lonely one” or the "solitary one" as it shines brightly in a patch of sky with no other bright stars nearby.
September 9, 2021
Webb Telescope new launch date December 18
The Webb Telescope is the successor to the Hubble Space Telescope. NASA said on September 8 that the new launch date is December 18.
September 8, 2021
Star collision triggers supernova explosion
Star collision triggers supernova! Dramatic evidence that a black hole or neutron star spiraled its way into the core of a companion star and ... boom!
September 7, 2021
Crepuscular rays: Photos from our readers
Those beams of light shooting out from the horizon or down from the clouds are called crepuscular rays, or sunrays. Beautiful, mysterious and very noticeable.
September 7, 2021
