News tagged with sun

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SDO watches giant filament on the Sun

A snaking, extended filament of solar material currently lies on the front of the sun— some 1 million miles across from end to end. Filaments are clouds of solar material suspended above the sun by powerful ...

Oct 03, 2014
4.5 / 5 (20) 0

Milky Way shaken... and stirred

A team of scientists headed by Ivan Minchev from the Leibniz Institute for Astrophysics Potsdam (AIP), has found a way to reconstruct the evolutionary history of our galaxy, the Milky Way, to a new level ...

Jan 20, 2014
3.1 / 5 (28) 1 | with audio podcast

What is a solar sail?

I'm Fraser Cain, and I'm a sailor. Well, okay, I've got a sailboat that I take out on the water when its warm and the weather's nice here on Vancouver Island. I think it's one of the reasons I absolutely ...

Jan 20, 2014
4.1 / 5 (20) 3

Earth's orbit around the sun

Ever since the 16th century when Nicolaus Copernicus demonstrated that the Earth revolved around in the Sun, scientists have worked tirelessly to understand the relationship in mathematical terms. If this ...

Nov 24, 2014
5 / 5 (16) 3

What is a Wolf-Rayet star?

Wolf-Rayet stars represent a final burst of activity before a huge star begins to die. These stars, which are at least 20 times more massive than the Sun, "live fast and die hard", according to NASA.

Feb 06, 2015
5 / 5 (16) 0

Astronomical measurements must account for gravity

One of the consequences of general relativity is that light can be deflected by nearby masses. Mass curves space, and this curvature causes light to bend slightly. It was first observed during a total eclipse ...

Sep 25, 2014
4.6 / 5 (17) 24

The ages of sun-like stars

The mass of a star is perhaps its most significant feature. It determines how brightly it shines (a star ten times more massive than the Sun will, during its normal lifetime, shine about forty million times ...

Feb 06, 2015
4.9 / 5 (16) 2

Explainer: How does our sun shine?

What makes our sun shine has been a mystery for most of human history. Given our sun is a star and stars are suns, explaining the source of the sun's energy would help us understand why stars shine. ...

Aug 28, 2014
5 / 5 (15) 3