Results tagged “stars”

An international team of researchers has proposed a new method to investigate the inner workings of supernovae explosions.

The 11 farthest known stars in our galaxy are located about 300,000 light-years from Earth, well outside the Milky Way's spiral disk.

Cannibalism Between Stars

Stars are born inside a rotating cloud of interstellar gas and dust, which contracts to stellar densities thanks to its own gravity.

When Stars Embrace

When we look at the night sky, we see stars as tiny points of light eking out a solitary existence at immense distances from Earth. But appearances are deceptive.

Sibling Stars

The loose speckling of stars in this new ESO image is the open star cluster IC 4651, located within the Milky Way, in the constellation of Ara (The Altar), about 3000 light-years away.

The first stars in the Universe were born several hundred million years after the Big Bang, ending a period known as the cosmological 'dark ages' when atoms of hydrogen and helium had formed, but nothing shone in visible light.

Stars With Their Chemical Clock On Hold

An international team of astrophysicists, led by Cristina Chiappini from the Leibniz Institute for Astrophysics Potsdam, has discovered a group of red giant stars for which the 'chemical clock' does not work.

Many, perhaps most, stars in the universe live their lives with companions by their sides -- in so-called binary systems. Until recently, however, the ancient RR Lyrae stars appeared, for mysterious reasons, to live their lives all alone.

Most of the stars in our galaxy have been formed in binary or multiple systems, some of which are "eclipsing," that is, consisting of two or more stars which, observed from Earth, undergo eclipses and mutual transits because of their orbital plane tipped edge-on to our planet.

A research group led by Anne Dutrey from the Laboratory of Astrophysics of Bordeaux, France, and the National Centre for Scientific Research (CNRS) observed the distribution of dust and gas in a binary star system called GG Tau-A.

Why Sibling Stars Look Alike

The chemical uniformity of stars in the same cluster is the result of turbulent mixing in the clouds of gas where star formation occurs, according to a study by astrophysicists at the University of California, Santa Cruz.

Stars are born in hiding, when dense regions within clouds of gas and dust collapse under their own gravity. But the clouds not only provide the raw material for star formation, they also absorb most of the light from their interior, hiding from view the crucial details of stellar birth -- one of the key astronomical processes if we want to understand our own origins!

Galactic Thief Almost Got Away with It

One of the closest galaxies to the Milky Way almost got away with theft. However, new simulations convicted the Large Magellanic Cloud (LMC) of stealing stars from its neighbor, the Small Magellanic Cloud (SMC). And the crucial evidence came from surveys looking for something entirely different -- dark objects on the outskirts of the Milky Way.

Astronomers have found an extraordinary galaxy cluster, one of the largest objects in the universe, that is breaking several important cosmic records.

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