Quantcast

Latest Observational astronomy Stories

Planet Hunting: Your Universe Today Podcast
2013-01-07 12:37:01

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online In this installment of our new podcast series Your Universe Today, redOrbit´s resident astronomer Dr. John Millis spoke with Dr. Eric Mamajek from the University of Rochester about the search for planets outside of our solar system and the possibility of finding life beyond Earth. This is part two of a three-part series on the topic, so be sure to listen to part 1 of “How Planets Form”. “¦...

2013-01-03 10:58:57

With its 2160 liters of liquid helium about to run out, the Herschel Space Observatory will, by the end of March, become just another piece of space junk. In January´s Physics World, Steve Eales, a University of Cardiff astronomer who leads one of the telescope´s largest surveys, explains how this space facility has advanced our understanding of star and galaxy formation. Submillimeter wavelength astronomy -- the kind of astronomy that the European Space Agency´s Herschel...

Christmas Light Show And The Christmas Star
2012-12-24 06:42:51

[ Watch the Video: ScienceCasts: Christmas Sky Show ] April Flowers for redOrbit.com - Your Universe Online What Christmas celebration could be complete without beautiful lights? This Christmas, the light show will not just be in your neighbor's yard, but in the sky as well. On the evening of December 25, Jupiter and the Moon are having a Christmas conjunction, which will be visible around the globe. Normally cut off from astronomical displays because of light pollution, even city...

ALMA Correlator Supercomputer Turns Man Antennas Into One Giant Telescope
2012-12-21 10:45:51

[ Watch the Video: All Systems Go for Highest Altitude Supercomputer ] Michael Harper for redOrbit.com — Your Universe Online When one begins to search for the origins of the universe, it helps to be well-equipped and as close to the heavens as possible. Therefore, the Atacama Large Millimeter/sub-millimeter Array (or ALMA) has been built high up in the martian-esque landscape of the Atacama desert of northern Chile. Each of these 66 radio telescopes (or giant antennas) are used...

Stellar Patrons Of The Milky Way Bar Identified By Astronomers
2012-12-19 15:03:31

SDSS-III Forget the restaurant at the end of the Universe – astronomers now have the clearest understanding yet of the bar at the center of the Milky Way. Scientists with the Sloan Digital Sky Survey III (SDSS-III) have announced the discovery of hundreds of stars rapidly moving together in long, looping orbits around the center of our Galaxy. "The best explanation for their orbits is that these stars are part of the Milky Way bar," says David Nidever, a Dean B. McLaughin Fellow...

Astronomers Observe White Dwarfs Imitating Black Holes
2012-12-18 14:20:20

Lee Rannals for redOrbit.com — Your Universe Online University of Southampton researchers reported in The Astrophysical Journal that they have observed bright X-ray flares in a nearby galaxy being produced by a white dwarf. The team made the discovery by detecting a dramatic, short-lived X-ray flare that was picked up by an X-ray telescope on the International Space Station (ISS). Astronomers used optical telescopes in South Africa and Chile to help observe the flare, called...

New Results Pave Way For Future Of X-ray Astrophysics Research
2012-12-13 17:36:02

Lee Rannals for redOrbit.com — Your Universe Online Scientists are paving the way for future X-ray astrophysics research by explaining why observations from orbiting X-ray telescopes do not match theoretical predictions. The team used powerful X-rays from the Linac Coherent Light Source (LCLS) at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory to study and measure a key process at work in extreme plasmas like those found in stars, black holes and...

Top 5 Amazing Facts About Mars
2012-12-10 17:08:49

Dr. John Millis for redOrbit.com — Your Universe Online Mars, the subject of human fascination for millennia, is an amazing world with an interesting history. Here, we look at the five most amazing facts about the Red Planet. 1. Mars is only about half the diameter of Earth: We often think of Mars as being quite similar to Earth; a place to visit and potentially inhabit in the future. But while it does bear some similarity with Earth, it is much smaller. In fact“¦...

X-ray Emissions A Tell-tale Sign Of Supernova Birth
2012-12-08 06:44:04

April Flowers for redOrbit.com - Your Universe Online A new study led by the University of Leicester has revealed new evidence suggesting X-ray detectors in space could be the first to witness new supernovae that signal the death of massive stars. An excess of X-ray radiation has been observed in the first few minutes of the collapse of massive stars. This excess may be the signature of the supernovae shock wave as it first escapes from the star. Dr. Rhaana Starling of the University...


Latest Observational astronomy Reference Libraries

Astrophysics
2014-01-12 00:00:00

Image Caption: NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light-years in diameter and approximately 60 million light-years distant. Credit: NASA/ESA/Wikipedia What is Astrophysics? For much of the modern age the term Astrophysics has been used synonymously with Astronomy. This interchange is so common that many textbooks even offer the two as having the same meaning. However, from a strictly historical perspective there are differences...

45_894c6a813094d5c55029fadb762d4d57
2010-10-08 17:45:24

Radio telescopes, used in tracking and collecting data from satellites and space probes, are a form of directional radio antenna used in radio astronomy. They operate on the radio frequency portion of the electromagnetic spectrum where they detect radio sources. Radio telescopes are large parabolic antennas used singly or in an array and are located far from major centers of population in order to avoid electromagnetic interference. Karl Guthe Jansky built the first radio antenna used to...

0_035f33139a46eac03f7b1ef5a5cd27be
2010-09-24 17:50:57

A telescope, designed to aid the observation of remote objects, collects some form of electromagnetic radiation (such as visible light). The Netherlands developed the first known practical telescope in the 17th century. The term "telescope" was termed in order to describe Galileo's instruments in 1611. However, Galileo was not the inventor of the telescope. It was Hans Lippershey, Zacharias Janssen, and Jacob Metius who are credited with the creation of the telescope. In 1668, Isaac Newton...

45_b90d45a4e7d89d873d39705549e516ce
2014-01-12 00:00:00

Sample Entry: Astronomy is the scientific study of stars, planets, comets, galaxies, and other phenomena that occur outside Earth's atmosphere (e.g. cosmic radiation). Astronomy deals with the evolution, physics, chemical makeup, meteorology, and motion of celestial objects, and also the formation of the universe. The word Astronomy comes from the Greek words astron (meaning "star") and nomos (meaning "law"). Astronomy is one of the oldest sciences. Since the dawn of man, people always...

0_140be4f8b9e91033cecf670093b7e642
2009-04-28 11:47:36

The Reverend Thomas William Webb (December 14, 1807 "“ May 19, 1885) was a British astronomer and faithful clergyman. The lone son of a clergyman, the Rev. John Webb was raised and educated by his father in absence of his mother who died in Webb's early childhood. He travelled to Oxford to attend Magdalen College. Soon after, he was ordained a minister by the Anglican Church in 1829. In 1843, he married Henrietta Montague. Mrs. Webb died on September 7, 1884. Webb followed shortly...

More Articles (24 articles) »
Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.