Latest Extrasolar planets Stories

2011-04-18 09:40:00

Jupiter-like worlds around other stars push shock waves ahead of them, according to a team of UK astronomers. Just as the Earth's magnetic "bow-shock" protects us from the high-energy solar wind, these planetary shocks protect their atmospheres from their star's damaging emissions. Team member Dr Aline Vidotto of the University of St Andrews will present a new model based on observations made with the SuperWASP (Wide Angle Search for Planets) project on Monday 18 April at the National...

2011-04-18 06:30:00

Detecting exoplanets that orbit at large distances from their star remains a challenge for planet hunters.  Now, scientists at the University of Leicester have shown that emissions from the radio aurora of planets like Jupiter should be detectable by radio telescopes such as LOFAR, which will be completed later this year. Dr Jonathan Nichols will present results at the RAS National Astronomy Meeting in Llandudno, Wales, on Monday 18th April. "This is the first study to predict the radio...

2011-03-05 10:45:00

Astronomy & Astrophysics is publishing new observations of the giant planet around ÃŽ² Pictoris. Discovered in 2009, this planet, called ÃŽ² Pictoris b, has now been detected again with the NaCo instrument on the VLT. Astronomers find that the planet is moving around the star. They have also measured the mass and the effective temperature of ÃŽ² Pic b.Astronomy & Astrophysics publishes new high angular resolution observations of the...

2011-01-18 14:29:21

Recently published in an article of the Astronomy & Astrophysics journal, a group of researchers from the Institute of Space Sciences (IEEC-CSIC) at Universitat Autònoma de Barcelona has discovered, for the first time, a delta Scuti pulsating star that hosts a hot giant transiting planet. The study was carried out by the PhD student, Enrique Herrero, the researcher Dr. Juan Carlos Morales, the exoplanet expert, Dr. Ignasi Ribas, and the amateur astronomer, Mr....

2010-12-08 14:30:00

NRC Herzberg Institute of Astrophysics releases image of fourth planet orbiting bright star HR 8799 An international team of astronomers has discovered a fourth giant planet, HR 8799e, outside our solar system. The new planet joins the three planets that were the subjects of the first-ever images of a planetary family orbiting a star other than our Sun. The planets orbit the star HR 8799, which lies about 129 light years from Earth and is faintly visible to the naked eye. The international...

2010-12-01 12:50:00

The atmosphere around a super-Earth exoplanet has been analyzed for the first time by an international team of astronomers using ESO's Very Large Telescope. The planet, which is known as GJ 1214b, was studied as it passed in front of its parent star and some of the starlight passed through the planet's atmosphere. We now know that the atmosphere is either mostly water in the form of steam or is dominated by thick clouds or hazes. The results will appear in the 2 December 2010 issue of the...

2010-11-18 13:55:00

Galactic cannibalism brings an exoplanet of extragalactic origin within astronomers' reach An exoplanet orbiting a star that entered our Milky Way from another galaxy has been detected by a European team of astronomers using the MPG/ESO 2.2-meter telescope at ESO's La Silla Observatory in Chile. The Jupiter-like planet is particularly unusual, as it is orbiting a star nearing the end of its life and could be about to be engulfed by it, giving tantalizing clues about the fate of our own...

2010-10-19 13:45:00

Observations from NASA's Spitzer Space Telescope reveal a distant planet with a warm spot in the wrong place. The gas-giant planet, named upsilon Andromedae b, orbits tightly around its star, with one face perpetually boiling under the star's heat. It belongs to a class of planets termed hot Jupiters, so called for their scorching temperatures and large, gaseous constitutions. One might think the hottest part of these planets would be directly under the sun-facing side, but previous...

2010-10-16 09:45:00

UA astronomers have developed a way to see faint planets previously hidden in their star's glare. The new mode enables scientists to search for planets closer to the star than has been previously possible.Using new optics technology developed at the University of Arizona's Steward Observatory, an international team of astronomers has obtained images of a planet on a much closer orbit around its parent star than any other extrasolar planet previously found.The discovery, published online in...

2010-09-09 15:02:58

Bad news for planet hunters: most of the "hot Jupiters" that astronomers have been searching for in star clusters were likely destroyed long ago by their stars. In a paper accepted for publication by the Astrophysical Journal, John Debes and Brian Jackson of NASA's Goddard Space Flight Center in Greenbelt, Md., offer this new explanation for why no transiting planets (planets that pass in front of their stars and temporarily block some of the light) have been found yet in star clusters. The...

Latest Extrasolar planets Reference Libraries

2004-10-19 04:45:41

Extrasolar Planet -- An extrasolar planet is a planet orbiting around a star other than the Sun. Extrasolar planets were first discovered in the 1990s as a result of improved telescope technology, CCD and computer-based image processing which allowed far more accurate measurements of stellar motions. The first extrasolar planets were reported by the astronomer Aleksander Wolszczan in 1993, orbiting the pulsar PSR 1257+12. Subsequent investigation has determined that they are only planets...

2004-10-19 04:45:40

Epsilon Eridani -- Epsilon Eridani is a main-sequence star in the constellation of Eridanus (the river). It is often used in science fiction because it is extremely sunlike, and in the fictional Star Trek universe it is the home sun of the planet Vulcan which is home to Mr. Spock. It is the third closest star visible without a telescope. It has 85% of the Sun's mass, almost that much of its diameter, and 28% of its luminosity. It is 10.5 light years from Earth. Its spectrum is...

2004-10-19 04:45:40

La Silla Observatory -- La Silla is a 2400-m mountain, bordering the southern extremity of the Atacama desert in Chile. It is located about 160 Km north of La Serena. Its geographical coordinates are: Latitude 29 15' south & Longitude 70 44' west. Originally known as Cinchado, the mountain was renamed La Silla (the saddle) after its shape. It rises quite isolated and remote from any artificial light and dust sources (astronomy's worst enemies). La Silla was the first ESO...

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Word of the Day
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.