Results tagged “astronomy”

Video: Riding Light

In our terrestrial view of things, the speed of light seems incredibly fast. But as soon as you view it against the vast distances of the universe, it's unfortunately very slow.

Cassiopeia A, or Cas A for short, is one of the most well studied supernova remnants in our galaxy. But it still holds major surprises.

Black Hole Chokes on a Swallowed Star

A five-year analysis of an event captured by a tiny telescope at McDonald Observatory and followed up by telescopes on the ground and in space has led astronomers to believe they witnessed a giant black hole tear apart a star.

A New View of Galaxy M82

An international team of astronomers led from Chalmers has used the giant radio telescope LOFAR to create the sharpest astronomical image ever taken at very long radio wavelengths.

If you sweep a laser pointer across the Moon fast enough, you can create spots that actually move faster than light. Anyone can do it.

By analyzing the light of hundreds of thousands of celestial objects, Johns Hopkins astronomers from the Sloan Digital Sky Survey (SDSS) have created a unique map of enigmatic molecules in our galaxy that are responsible for puzzling features in the light from stars.

Astronomers from MAD at Universidad de Chile present a viable scenario for the three dimensional geometry of a planet forming system. The finding is based on the discovery of shadows cast by a warped inner disk which bears strong implications for the dynamics of planet formation.

In an interstellar race against time, astronomers have measured the space-time warp in the gravity of a binary star and determined the mass of a neutron star--just before it vanished from view.

Machines Teach Astronomers About Stars

Astronomers are enlisting the help of machines to sort through thousands of stars in our galaxy and learn their sizes, compositions and other basic traits.

At a time when our earliest human ancestors had recently mastered walking upright, the heart of our Milky Way galaxy underwent a titanic eruption, driving gases and other material outward at 2 million miles per hour.

Astronomers have observed the largest X-ray flare ever detected from the supermassive black hole at the center of the Milky Way galaxy.

Stars' Spins Reveal Their Ages

Stars slow down as they age, and their ages are well-kept secrets. Astronomers are taking advantage of the first fact to tackle the second and tease out stellar ages.

Hubble Sweeps a Messy Star Factory

This sprinkle of cosmic glitter is a blue compact dwarf galaxy known as Markarian 209. Galaxies of this type are blue-hued, compact in size, gas-rich, and low in heavy elements.

The Hot Blue Stars of Messier 47

This spectacular image of the star cluster Messier 47 was taken using the Wide Field Imager camera, installed on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile.

High-energy jets powered by supermassive black holes can blast away a galaxy's star-forming fuel, resulting in so-called "red and dead" galaxies: those brimming with ancient red stars yet containing little or no hydrogen gas to create new ones.

The NASA/ESA Hubble Space Telescope observes some of the most beautiful galaxies in our skies -- spirals sparkling with bright stellar nurseries, violent duos ripping gas and stars away from one another as they tangle together, and ethereal irregular galaxies that hang like flocks of birds suspended in the blackness of space.

Gas Spirals as Nurseries of Twin Stars

Stars form in interstellar clouds of molecular gas and dust.

For the first time, an international team of astronomers, led by Dr. James Geach from the University of Hertfordshire, has revealed the dramatic 'blow out' phase of galactic evolution.

At a recent meeting ESO's main governing body, the Council, gave the green light for the construction of the European Extremely Large Telescope (E-ELT) in two phases.

Pulsars are very dense neutron stars that are the size of a city (their radius approaches ten kilometers), which, like lighthouses for the universe, emit gamma radiation beams or X-rays when they rotate up to hundreds of times per second.

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