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.

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.

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.

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.

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.

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.

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.

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.

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!

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.

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