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News for Norther Colorado and the world

Wednesday, October 22, 2014

Posts Tagged ‘supernova’

Astronomy Picture of the Day

Astronomy Picture of the Day

In 185 AD, Chinese astronomers recorded the appearance of a new star in the Nanmen asterism - a part of the sky identified with Alpha and Beta Centauri on modern star charts. The new star was visible for months and is thought to be the earliestrecorded supernova. This multiwavelength composite image from orbiting telescopes of the 21st century, XMM-Newton and Chandra in X-rays, and Spitzer and WISE in infrared, shows RCW 86, understood to be the remnant of that stellar explosion.RCW 86: ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

Nobels for a Strange Universe  Image Credit: High-Z Supernova Search Team, HST, NASA Explanation: Thirteen years ago results were first presented indicating that most of the energy in our universe is not in stars or galaxies but is tied to space itself. In the language of cosmologists, a large cosmological constant is directly implied by new distant supernovaobservations. Suggestions of a cosmological constant (lambda) were not new -- they have existed since the advent ... Full Story

Sky Tonight—March 23, Moon near red star Antares

Sky Tonight—March 23, Moon near red star Antares before dawn

Courtesy of EarthSky A Clear Voice for Science Visit EarthSky at www.EarthSky.org If you are an early riser, look out a south-facing window before dawn on March 24, 2011 – Thursday morning – to see a lovely waning gibbous moon in front of the constellation Scorpius the Scorpion. Understanding moon phases The reddish star near the moon is Antares, considered the Scorpion’s ruby heart. Antares is a red supergiant star, located roughly opposite in the sky from another famous red ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

  MWC 922: The Red Square Nebula Credit & Copyright: Peter Tuthill (Sydney U.) & James Lloyd (Cornell) Explanation: What could cause a nebula to appear square? No one is quite sure. The hot star system known as MWC 922, however, appears to be embedded in a nebula with just such a shape. The above image combines infraredexposures from the Hale Telescope on Mt. Palomar in California, and the Keck-2 Telescope on Mauna Kea in Hawaii. A leading progenitor hypothesis for ... Full Story

Astronomy Picture of the Day

Astronomy Picture of the Day

      eta Oph: Runaway Star Credit: NASA, JPL-Caltech, WISE Team Explanation: Like a ship plowing through cosmic seas, runaway star Zeta Ophiuchi produces the arcing interstellar bow wave or bow shock seen in this stunning infrared portrait from the WISE spacecraft. In the false-color view, bluish Zeta Oph, a star about 20 times more massive than the Sun, lies near the center of the frame, moving toward the top at 24 kilometers per second. Its strong stellar wind ... Full Story

Astronomy Photo of the Day

Astronomy Photo of the Day

      The Cosmic Web of the Tarantula Nebula Credit & Copyright: Marcelo Salemme Explanation: It is the largest and most complex star forming region in the entire galactic neighborhood. Located in the Large Magellanic Cloud, a small satellite galaxy orbiting our Milky Way galaxy, the region's spidery appearance is responsible for its popular name, the Tarantula nebula. This tarantula, however, is about 1,000 light-years across. Were it placed at the distance of ... Full Story

Earthsky Tonight — March 6, 2010: Last quarter moon

Earthsky Tonight — March 6, 2010: Last quarter moon near red star Antares

Courtesy of EarthSky A Clear Voice for Science www.EarthSky.org If you are an early riser, look out a south-facing window on the morning of March 7 (Sunday) to see a lovely last quarter moon in front of the constellation Scorpius the Scorpion. The reddish star near the moon is Antares, considered the Scorpion’s ruby Heart. Antares is a red supergiant star, located roughly opposite in the sky to another famous red supergiant star, Betelgeuse in the constellation Orion the Hunter. ... Full Story

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