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A white dwarf sounds harmless enough. It’s the small, dead core of a once-normal star like the Sun. But to a close companion star, a white dwarf is anything but harmless.
Our solar system can be a dangerous place. The most striking evidence of that came 20 years ago today, when the first fragment of a shattered comet blasted the planet Jupiter.
FROM THE UNIVERSITY OF TEXAS McDONALD OBSERVATORY, AS HEARD ON KCBS RADIO WEEKDAYS @ 9:52 A.M., 7:35 P.M. & 2:52 A.M STARDATE 07/15/2014: Our home galaxy, the Milky Way, is a giant, encompassing every individual […]
If you missed Saturday’s supermoon, don’t worry, you ain’t seen nothin’ yet as the August 2014 supermoon will be the closest the moon comes to earth all year, and should be the best of the five supermoons of 2014 as it passes within 221,765 miles of us.
Mercury and Venus, the Sun’s closest planets, team up in the eastern sky at dawn the next few mornings. Venus is the “morning star,” so it’s an easy target. Mercury is fainter, but it’s not far to the lower left of Venus, which will help you pick it out.
A bright star and a brighter planet are staging a beautiful encounter in the evening sky. They’re quite close together tonight, and will pass even closer over the next few nights.
Over the decades, when astronomers wanted a subject for testing new techniques for studying the stars, they frequently turned to Vega, the brightest star of Lyra, the harp.
A massive solar flare flooded the sunlit portion of the planet Tuesday morning with X-rays powerful enough to disrupt GPS navigation, and airplane and maritime communication for several minutes.
FROM THE UNIVERSITY OF TEXAS McDONALD OBSERVATORY, AS HEARD ON KCBS RADIO WEEKDAYS @ 9:52 A.M., 7:35 P.M. & 2:52 A.M. STARDATE 07/04/2014: The Sun may feel bigger and brighter during the hot days of […]