Results tagged “astronomy”

Using data from NASA's Kepler space telescope, an international team of astronomers has discovered a distant planetary system featuring multiple planets orbiting at a severe tilt to their host star.

A team of researchers including Carnegie's Mansi Kasliwal and John Mulchaey used a novel astronomical survey software system -- the intermediate Palomar Transient Factory (iPTF) -- to link a new stripped-envelope supernova, named iPTF13bvn, to the star from which it exploded.

An international team of astronomers has observed part of the final death throes of the largest known star in the universe as it throws off its outer layers. The discovery, by a collaboration of scientists from the UK, Chile, Germany and the USA, is a vital step in understanding how massive stars return enriched material to the interstellar medium -- the space between stars -- which is necessary for forming planetary systems.

Hubble's View of Galaxy NGC 3621

This Hubble Picture of the Week is dedicated to the over 200 000 Facebook fans of ESA/Hubble, who share our passion for the NASA/ESA Hubble Space Telescope and the discoveries it brings.

Galactic Bubble

Nestled within the shell around this large bubble is an embryonic star that is already a hefty eight times more massive than our Sun.

A large hot molecular cloud around a very young star was discovered by ALMA. This hot cloud is about ten times larger than those found around typical solar-mass baby stars, which indicates that the star formation process has more diversity than ever thought. This result was published in Astrophysical Journal Letters on 20 September 2013.

Astronomers have detected cold streams of primordial hydrogen, vestigial matter left over from the Big Bang, fueling a distant star-forming galaxy in the early universe. Profuse flows of gas onto galaxies are believed to be crucial for explaining an era 10 billion years ago, when galaxies were copiously forming stars.

Magnetic Field May Shape 'Blooming' Star

An old star, IRAS 15445-5449, has begun to push out a jet of charged particles that glow with radio waves. A few old stars are known to have jets, "but this is the first one where the radio waves tell us the jet is held together by a strong magnetic field", said Dr Jessica Chapman of CSIRO Astronomy and Space Science, a member of the research team.

Dating Our Galaxy's Dormant Volcano

A dormant volcano -- a supermassive black hole -- lies at the heart of our galaxy. Fresh evidence suggests that it last erupted two million years ago. Astronomers have long suspected such an outburst occurred, but this is the first time they've been able to date it.

Clues to the Growth of the Colossus in Coma

A team of astronomers has discovered enormous arms of hot gas in the Coma cluster of galaxies by using NASA's Chandra X-ray Observatory and ESA's XMM-Newton. These features, which span at least half a million light years, provide insight into how the Coma cluster has grown through mergers of smaller groups and clusters of galaxies to become one of the largest structures in the universe held together by gravity.

Astronomers have discovered light echoing off material surrounding a recent supernova explosion, SN 2009ig. The dust and gas that are reflecting the light are so close to the eruption center that it is likely related to the progenitor star. This discovery supports the theory that exploding white dwarfs become unstable from matter donated by large, non-degenerate stars.

Cosmic Collision Between Galaxies

This image from the NASA/ESA Hubble Space Telescope captures an ongoing cosmic collision between two galaxies -- a spiral galaxy is in the process of colliding with a lenticular galaxy.

A flash of light from a stellar outburst has been used to probe for the first time the 3-D structure of material ejected by an erupting nova.

One of the densest objects in the universe, a neutron star about 10,000 light-years from Earth, has been discovered suddenly putting the brakes on its spinning speed. The event is a mystery that holds important clues for understanding how matter reacts when it is squeezed more tightly than the density of an atomic nucleus -- a state that no laboratory on Earth has achieved. The discovery, by an international team of scientists that includes a Penn State University astronomer, will be published in the journal Nature on 30 May 2013.

A University of Alberta physicist brought together backyard astronomers and professionals to confirm the mysterious behavior of two stars more than 300 light-years from Earth.

Formed by a star throwing off its outer layers as it runs out of fuel, the Ring Nebula is an archetypal planetary nebula. It is both relatively close to Earth and fairly bright, and so was first recorded in the late 18th century.

Photo: Admiring the Galaxy

It is difficult for even the most seasoned astronomer to resist taking time out of a busy observing schedule to stop and stare up at the gloriously rich southern sky. This image is a self portrait taken by astronomer Alan Fitzsimmons, who took this photo between observing sessions at ESO's La Silla Observatory.

Amateur contributions to professional publications have increased exponentially over the last decades in the field of Planetary Astronomy. Here we review the different domains of the field in which collaborations between professional and amateur astronomers are effective and regularly lead to scientific publications.

Less than a year after the decision to site the revolutionary Square Kilometre Array (SKA) in both Southern Africa and Australia, the SKA Organisation has opened its new international headquarters.

NGC 6559: Anarchic Star Formation

The Danish 1.54-metre telescope located at ESO's La Silla Observatory in Chile has captured a striking image of NGC 6559, an object that showcases the anarchy that reigns when stars form inside an interstellar cloud.

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