Quantcast

Latest Astronomy Stories

meteorite impact crater in Nicaragua
2014-09-09 04:23:59

Chuck Bednar for redOrbit.com - Your Universe Online Nicaraguan officials reported Sunday that the impact of a small meteorite had left a nearly 40-foot crater near the airport of the capital city of Managua, but US scientists are casting doubts on those claims. According to an Associated Press (AP) report published Sunday night, Nicaraguan spokeswoman Rosario Murillo explained that a committee formed by the government to study the incident determined the 16-foot deep crater was caused...

2014-09-08 12:21:15

WASHINGTON, Sept. 8, 2014 /PRNewswire-USNewswire/ -- Scientists have found evidence of plate tectonics on Jupiter's moon Europa. This indicates the first sign of this type of surface-shifting geological activity on a world other than Earth. http://photos.prnewswire.com/prnvar/20081007/38461LOGO Researchers have clear visual evidence of Europa's icy crust expanding. However, they could not find areas where the old crust was destroyed to make room for the new. While examining Europa...

plate tectonics on Europa
2014-09-08 12:06:43

NASA/JPL Scientists have found evidence of plate tectonics on Jupiter's moon Europa. This indicates the first sign of this type of surface-shifting geological activity on a world other than Earth. Researchers have clear visual evidence of Europa's icy crust expanding. However, they could not find areas where the old crust was destroyed to make room for the new. While examining Europa images taken by NASA's Galileo orbiter in the early 2000s, planetary geologists Simon Kattenhorn, of the...

migration tracks on the sun
2014-09-04 11:34:53

Karen C. Fox, NASA's Goddard Space Flight Center Approximately every 11 years, the sun undergoes a complete personality change from quiet and calm to violently active. The height of the sun’s activity, known as solar maximum, is a time of numerous sunspots, punctuated with profound eruptions that send radiation and solar particles out into the far reaches of space. However, the timing of the solar cycle is far from precise. Since humans began regularly recording sunspots in the 17th...

2014-09-04 08:26:04

SUNNYVALE, Calif., Sept. 4, 2014 /PRNewswire/ -- Cepheid (NASDAQ: CPHD) today announced that it has been named to Forbes magazine's list of the World's Most Innovative Growth Companies, reflecting companies identified by investors as innovation leaders. "Cepheid's GeneXpert(®) Systems and associated tests are continuing to lead innovation in the field of molecular diagnostics, bringing the power of accurate, rapid and easy-to-use diagnostic tests to virtually any location around the world,"...

Lupus 4
2014-09-04 06:52:11

Richard Hook, ESO Lupus 4, a spider-shaped blob of gas and dust, blots out background stars like a dark cloud on a moonless night in this intriguing new image. Although gloomy for now, dense pockets of material within clouds such as Lupus 4 are where new stars form and where they will later burst into radiant life. The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile captured this new picture. [ Watch the Video: A Close-Up View Of The Dark...

Laniakea Supercluster
2014-09-04 04:40:37

Chuck Bednar for redOrbit.com - Your Universe Online Using a new mapping technique that takes into account the motions of nearby galaxies, and not just their distances, researchers from the University of Hawaii have discovered that the Milky Way resides on the outer edge of a massive, previously undetected supercluster of galaxies that they have dubbed Laniakea. Laniakea, a moniker created from the words meaning “immeasurable heaven” in Hawaiian, spans 520 million light-years in...

Pleiades
2014-09-01 03:00:50

Dave Finley, National Radio Astronomy Observatory Astronomers have used a worldwide network of radio telescopes to resolve a controversy over the distance to a famous star cluster -- a controversy that posed a potential challenge to scientists' basic understanding of how stars form and evolve. The new work shows that the measurement made by a cosmic-mapping research satellite was wrong. The astronomers studied the Pleiades, the famous "Seven Sisters" star cluster in the constellation...

molecular cloud thinkstock 89614446
2014-09-01 04:34:43

Chuck Bednar for redOrbit.com - Your Universe Online Astrophysicists and computational astronomers from the University of California, Santa Cruz have discovered why sibling stars look alike – those formed from a single cloud share the same chemical fingerprint due to early, fast and turbulent mixing of gas in the giant molecular clouds where star formation occurs. Stars are made primarily of hydrogen and helium, but they also contain trace amounts of elements such as carbon, oxygen...

Supernova_explosion
2014-08-30 07:29:17

European Space Agency Astronomers using ESA’s Integral gamma-ray observatory have demonstrated beyond doubt that dead stars known as white dwarfs can reignite and explode as supernovae. The finding came after the unique signature of gamma rays from the radioactive elements created in one of these explosions was captured for the first time. The explosions in question are known as Type Ia supernovae, long suspected to be the result of a white dwarf star blowing up because of a...


Latest Astronomy Reference Libraries

Stellar Astrophysics
2014-01-12 00:00:00

The prominent feature that allows for the existence of life on Earth is the Sun. Radiation from our closest star provides heat and energy to our planet, driving biological processes and providing the necessary conditions for liquid water to naturally exist. But our Sun is only but one star in this vast Universe. And as it turns out, most stars are quite different than the one that illuminates our day. For this reason, scientists have, for hundreds of years, attempted to study the other...

Planetary Astronomy
2014-01-12 00:00:00

Image Caption: Artistic concept of a planetary system. Credit: Wikipedia/NASA/JPL-Caltech The term Astronomy encompasses a broad range of topics, including the study of stars, galaxies, and planets. In order to focus on the different areas of study, many subfields of astronomy emerge. One such area is the study of planets known, appropriately, as Planetary Astronomy. Observational Planetary Astronomy Even within the field of Planetary Astronomy, there are several divisions to...

Cosmology
2014-01-12 00:00:00

Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...

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...

Tropic of Capricorn
2013-02-21 13:31:57

The Tropic of Capricorn, alternately called the Southern Tropic, is a marker of the most southerly latitude on the Earth at which the Sun can be directly overhead. This occurs at the December solstice, when the southern hemisphere is tilted towards the sun at its maximum degree. It is one of the five major circles of latitude that mark maps of the Earth. It presently lies 23 degrees 26’ 16’’ south of the Equator. Currently, the Tropic of Capricorn is drifting towards the north at...

More Articles (166 articles) »
Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.