News tagged with sun

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SOHO shows new images of Comet ISON

As Comet ISON heads toward its closest approach to the sun—known as perihelion—on Nov. 28, 2013, scientists have been watching through many observatories to see if the comet has already broken up under ...

Nov 27, 2013
5 / 5 (9) 5 | with audio podcast

How do you jumpstart a dead star?

It's a staple of science fiction, restarting our dying star with some kind of atomic superbomb. Why is our sun running out of fuel, and what can we actually do to get it restarted?

Mar 14, 2014
4.3 / 5 (31) 15

Partial solar eclipse over the U.S. on Thursday, Oct. 23

People in most of the continental United States will be in the shadow of the Moon on Thursday afternoon, Oct. 23, as a partial solar eclipse sweeps across the Earth. For people looking through sun-safe filters, from Los Angeles, ...

Oct 17, 2014
4.8 / 5 (4) 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

Why is the sun going quiet?

The sun is our nearest star and the source of all our light and heat on Earth but recent reports have highlighted an ongoing steep decline in solar activity. ...

Jan 22, 2014
4.1 / 5 (43) 16

Is the sun at solar minimum?

We generally think of the Sun as a constant in our lives. It rises and sets regularly, and seems to be an unchanging sphere of brilliant light. In fact the Sun has a turbulent surface with prominences that ...

Oct 03, 2014
4.7 / 5 (22) 4