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Achernar marks the End of the River
Achernar is the 9th brightest star and flattest star known. It marks the end of Eridanus the River. Here's why much of Earth never sees it ... and how you can.
November 14, 2021
Meet Hamal, an ancient equinox star
Meet Hamal, the brightest star in Aries, and learn why people sometimes refer to the March equinox point as the First Point in Aries.
November 13, 2021
Algol is the Demon Star
What's the scariest star in all the heavens? Look for Algol the Demon Star on autumn evenings. It's a great choice for a driveway telescope night on Halloween.
October 29, 2021
Deneb Kaitos marks the tail of Cetus
Deneb Kaitos is the brightest star in the constellation Cetus the Whale. It's at its highest in the sky on October and November evenings.
October 17, 2021
Delta Cephei helps measure cosmic distances
Delta Cephei is an inconspicuous variable star in the northern constellation Cepheus the King. This star helps establish the cosmic distance scale.
September 24, 2021
Gamma Cephei, aka Errai, a future North Star
Gamma Cephei - or Errai - is a binary star system that will someday be Earth’s North Star. Gamma Cephei is home to the first exoplanet ever discovered.
September 22, 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
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
Why 61 Cygni is nicknamed Flying Star
Compared to other stars, 61 Cygni moves quite rapidly against the background of more distant stars, revealing its proximity to Earth.
August 4, 2021
See Mira the Wonderful at its brightest
Catch elusive wonderful Mira, a famous variable star in the constellation Cetus, at its maximum brightness in August 2021. Now you see it ... now you don't!
August 3, 2021
