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Latest Circumstellar discs Stories

b6d89969884d38dff34cb0fe6b1a66411
2007-06-13 09:35:00

A young star's strange elliptical ring of dust likely heralds the presence of an undiscovered Neptune-sized planet, says a University of Rochester astronomer in the latest Monthly Notices of the Royal Astronomical Society.

9ee5fe8bc71a30003a7d29f961e23e8c1
2007-04-18 13:50:00

Astronomers have laid down the cosmic equivalent of yellow "caution" tape around super hot stars, marking the zones where cooler stars are in danger of having their developing planets blasted away.

4bacec642cc6390feb00715b5aac388b1
2007-01-07 15:47:23

New observations from NASA's Hubble Space Telescope have begun to fill gaps in the early stages of planet birth.

d2670745922301ee5adc561a464bb3e31
2006-10-10 00:35:00

NASA's Hubble Space Telescope, in collaboration with ground-based observatories, has provided definitive evidence for the existence of the nearest extrasolar planet to our solar system.

709a869b0b8be5fc26d6fbd4c203b8821
2006-09-29 18:45:00

With the VISIR instrument on ESO's Very Large Telescope, astronomers have mapped the disc around a star more massive than the Sun.

2006-07-24 13:04:18

WASHINGTON (Reuters) - When you're young and single, it's easy to dance fast. But when little ones are on the way, the dance tends to slow down. And so it seems to be with stars and the planet-forming disks that orbit them.

86ccc101927eadc98b16304f84b08b6f1
2006-07-03 10:18:58

A close look at the protoplanetary disk around a young star by two teams of astronomers using the Subaru telescope on Mauna Kea has led to the unexpected discovery of two banana-shaped arcs facing each other.

d687985b284553f24f676d4971f77c251
2006-06-27 14:30:00

NASA's Hubble Space Telescope has revealed not one but two dust disks circling the nearby star Beta Pictoris. This is evidence for the possibility of at least one Jupiter-size planet orbiting the star.

4b12bd84b0dd791e8e475fdbd41937e51
2006-06-07 07:50:00

Dead zones in space - which typically extend out to 13 astronomical units from the central star of an extrasolar planetary system - can significantly slow planetary migration so that planets are not lost to the systems.

2006-04-05 13:25:00

Planets outside our solar system might form, phoenix-like, out of the debris circling a dead star known as a pulsar, researchers reported on Wednesday after finding the makings for a planet near such a body.


Latest Circumstellar discs Reference Libraries

8_2c71772f2c3a31994d5208d4518632494
2004-10-19 04:45:44

Cosmogony -- Cosmogony is the study of the origins of celestial objects. It is most commonly used to refer to the study of the origin of the solar system. Currently, the most widely accepted theory is that the solar system was formed roughly 5 billion years ago with the collapse of a nebula of gas and dust, likely caused by shock waves generated by a nearby supernova. The solar system would have formed as a member of a star cluster, now long-since dispersed throughout the Milky Way over...

4_2263b8f4e602bddd69c225b3bc2c46aa2
2004-10-19 04:45:41

Asteroid Belt -- The Asteroid belt is a region of the solar system falling roughly between the planets Mars and Jupiter where the greatest concentration of asteroid orbits can be found. It is believed that, during the first million years of the solar system history, planets formed by accretion of planetesimals. Ripetute collisions led to the familiar rocky planets and to the gas giant's cores. However, in this zone of the system the strong gravity of Jupiter inhibited the final stages...

3_a997defc9ca7ea81c6bd4ed4bab88e3c2
2004-10-19 04:45:40

Vega -- Vega (Alpha Lyrae) is the lead star in the constellation Lyra, reaching near directly overhead the mid-northern latitudes, during the summer. It's a "nearby star" at only 25 light years distant and together with Arcturus and Sirius, one of the brightest stars in the Sun's neighbourhood. Vega is a vertex of the Summer Triangle. Its spectral class is A0V (Sirius, an A1V, is slightly less powerful) and it's firmly in the main sequence, fusing hydrogen to helium in its core....

3_26342a6670b6131c97d5fc3f8796ebd92
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...

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