The project was funded by the UK Science and Technology Facilities Council and includes an international team of researchers. The project team used the High Accuracy Radial Velocity Planet Searcher (HARPS), a high-precision planet-finding spectrograph, on the European Southern Observatory's 3.6m telescope at La Silla in Chile, to detect the planetary systems.
The team studied stars known as DMPP-1, DMPP-2 and DMPP-3. The planets discovered, DMPP-1b, DMPP-1c, DMPP-1d, DMPP-1e, DMPP-2b and DMPP-3Ab, are very close to the stars and are heated to temperatures of 1100 degrees C–1800 degrees C. At these temperatures, the atmosphere and even the rocky surface of the planet can be lost, and some of this material disperses to form a thin shroud of gas.
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White Christmas: Snow is guaranteed to fall on these icy planets and moons | Science | News |
Snowstorms are common to planet Earth, but you may not know it snows elsewhere in the Solar System. Express.co.uk reveals the places beyond our planet where you may also find snow and ice.
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However, the snow that falls on red planet Mars there is made of carbon dioxide – the same ingredient used to make dry ice on Earth.
NASA’s Mars Reconnaissance Orbiter has snapped the sand dunes around Mars’ north pole, which are seasonally covered with carbon dioxide snow and ice.
If I have no hope for the planet, why am I so determined to have this baby?
My heart relocates itself, sinking down somewhere around my ankles. They have 10 more years of habitable planet than the baby I am carrying.
The sky over our Canberra home is tinged orange, the air is thick and sticks in the back of your throat in such a way that no coughing seems to dislodge the sensation. The whole country is suffocating. We haven't seen the sky in a month.
Outside, the particle count is only 200 PM2.5 today. Yesterday it was 700, more than double the highest warning of "hazardous". Two months ago we'd never looked at fine particle readings. We didn't know the difference between a 10-micrometre particle that can be filtered out by your respiratory system, and one smaller than 2.5 micrometres, that will find its way right into your bloodstream.
Massive gas disk raises questions about planet formation theory -- ScienceDaily
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) found a young star surrounded by an astonishing mass of gas. The star, called 49 Ceti, is 40 million years old and conventional theories of planet formation predict that the gas should have disappeared by that age. The enigmatically large amount of gas requests a reconsideration of our current understanding of planet formation.
Planets are formed in gaseous dusty disks called protoplanetary disks around young stars. Dust particles aggregate together to form Earth-like planets or to become the cores of more massive planets by collecting large amounts of gas from the disk to form Jupiter-like gaseous giant planets. According to current theories, as time goes by the gas in the disk is either incorporated into planets or blown away by radiation pressure from the central star.
And here's another article:
Hubble Observes a Mystery: 'Cotton Candy' Planets – Exoplanet Exploration: Planets Beyond our
"Super-Puffs" may sound like a new breakfast cereal. But it's actually the nickname for a unique and rare class of young exoplanets that have the density of cotton candy. Nothing like them exists in our solar system.
New data from NASA's Hubble Space Telescope have provided the first clues to the chemistry of two of these super-puffy planets, which are located in the Kepler 51 system. This exoplanet system, which actually boasts three super-puffs orbiting a young Sun-like star, was discovered by NASA's Kepler space telescope in 2012. However, it wasn't until 2014 when the low densities of these planets were determined, to the surprise of many.
Star Wars: Every New Planet Introduced in the Disney Movies - IGN
Astronomers discover 'puff planets' with the density of candy floss
Wondering what the day has in store for your star sign? Here's a quick glance at horoscopes and more for...
Planet Formation Theory Questioned After Discovery of Massive Gas Disk Surrounding Young Star
The distribution of dust is shown in red; the distribution of carbon monoxide is shown in green; and the distribution of carbon atoms is shown in blue. Credit: ALMA (ESO/NAOJ/NRAO), Higuchi et al.
Recent advances in radio telescopes have yielded a surprise in this field. Astronomers have found that several debris disk still possess some amount of gas. If the gas remains long in the debris disks, planetary seeds may have enough time and material to evolve to giant planets like Jupiter. Therefore, the gas in a debris disk affects the composition of the resultant planetary system.
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"Working 9 - 5, what a way to make a living..." Not if you are an academic. New study shows researchers have to sac… https://t.co/aCvAdZXNNc bmj_latest (from London Beijing Delhi New York) Tue Dec 24 12:01:14 +0000 2019
Researchers make new discoveries set to reveal the geology of #planets outside our solar system @NatureAstronomy https://t.co/ROMqnuyUpd physorg_com Tue Dec 24 13:05:23 +0000 2019
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