News tagged with stars

The physical properties of dense molecular clouds

Small, dense interstellar clouds of gas and dust, containing hundreds to thousands of solar-masses of material, are suspected of being the precursors to stars and stellar clusters. These so-called cores, with gas densities ...

dateJun 25, 2015 in Astronomy
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ESO image: Sibling stars

Open star clusters like the one seen here are not just perfect subjects for pretty pictures. Most stars form within clusters and these clusters can be used by astronomers as laboratories to study how stars evolve and die. ...

dateAug 19, 2015 in Astronomy
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Work-experience schoolboy discovers a new planet

A 15-yr-old schoolboy has discovered a new planet orbiting a star 1000 light years away in our galaxy. Tom Wagg was doing work-experience at Keele University when he spotted the planet by finding a tiny dip in the light of ...

dateJun 10, 2015 in Astronomy
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Giant galaxy is still growing

New observations with ESO's Very Large Telescope have revealed thatthe giant elliptical galaxy Messier 87 has swallowed an entire medium-sized galaxy over the last billion years. For the first time a team of astronomers has ...

dateJun 25, 2015 in Astronomy
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A shy galactic neighbor

The Sculptor Dwarf Galaxy, pictured in this new image from the Wide Field Imager camera, installed on the 2.2-metre MPG/ESO telescope at ESO's La Silla Observatory, is a close neighbour of our galaxy, the Milky Way. Despite ...

dateSep 16, 2015 in Astronomy
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Delta Cephei's hidden companion

To measure distances in the universe, astronomers use cepheids, a family of variable stars whose luminosity varies with time. Their role as distance calibrators has brought them attention from researchers for more than a ...

dateMay 12, 2015 in Astronomy
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Transition discs in Ophiuchus and Taurus

A star is typically born with a disk of gas and dust encircling it, from which planets develop as dust grains in the disk collide, stick together and grow. These disks, warmed by the star to a range of temperatures above ...

dateJul 07, 2015 in Astronomy
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