Posts Tagged ‘new moon tonight’
EarthSky Tonight—Algol, a famous variable star,
Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org Algol – perhaps the most famous variable star in all the heavens – will be dimmest tonight at 8:29 p.m. Mountain Standard Time. Even at its dimmest, Algol is still bright enough to see with the eye. Algol is what astronomers call an eclipsing binary star. In other words, the single point of light that we see as Algol is really two stars. Like clockwork, these two stars revolve around each other every 2.87 ... Full Story
EarthSky Tonight—Nov 6, A famous variable star in
Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Delta Cephei is a famous variable star in the constellation Cepheus. With clock-like precision, this rather faint star doubles in brightness every 5.36 days. You can see the brightness change best if you contrast this star to others nearby. The constellation Cepheus requires a dark sky to be seen, but if you can spot this constellation, you might be able to find the variable star. You will find it high in your northern sky on ... Full Story
Earthsky Tonight—July 10, Look toward the center of
Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org Yesterday’s chart showed the part of our Milky Way galaxy that stretches overhead in the evening. Today’s chart is aimed toward the galaxy’s center, which is located some 30,000 light-years away. Remember, when you are looking at this starlit band across the sky – visible from country locations – you are peering edgewise into our own galaxy. Today’s chart shows that the starlit trail of the Milky Way seems to bulge ... Full Story
Earthsky Tonight—July ll, When is the next total
Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org A total eclipse of the sun takes place today, but not in the United States. To see it – one of nature’s grandest spectacles – you must be located along today’s long yet narrow total eclipse path that stretches across the South Pacific. Eclipse path for July 11, 2010 total solar eclipse People ask when a total solar eclipse will be visible in the mainland United States. It won’t happen until August 21, 2017. The next ... Full Story
