News tagged with sun

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Under the bright lights of an aging sun

Life as we know it on Earth is linked to our star, the Sun, which provides our planet with just the right amount of heat and energy for liquid water to be stable in our lakes, rivers and oceans. However, ...

Jul 04, 2014
4.5 / 5 (14) 10

A cometary graveyard

A team of astronomers from the University of Anitoquia, Medellin, Colombia, have discovered a graveyard of comets. The researchers, led by Anitoquia astronomer Prof. Ignacio Ferrin, describe how some of these ...

Aug 02, 2013
4.4 / 5 (14) 1 | with audio podcast

Tilted suns

(Phys.org) —The Earth's axis of rotation is tilted 23.4 degrees to its orbital motion around the Sun (more precisely, its spin axis has a tilt of 23.4 degrees with respect to the axis of its orbit). This ...

Nov 04, 2013
4.8 / 5 (13) 0 | with audio podcast

NASA's IRIS spots its largest solar flare

(Phys.org) —On Jan. 28, 2014, NASA's Interface Region Imaging Spectrograph, or IRIS, witnessed its strongest solar flare since it launched in the summer of 2013. Solar flares are bursts of x-rays and light ...

Feb 21, 2014
3.1 / 5 (20) 0

Fossil from the depths of the solar system

(Phys.org) —ISON is approaching the Sun. An international observation campaign which involves ground-based telescopes, space probes and space telescopes has been running for some time and is already providing ...

Nov 11, 2013
5 / 5 (11) 0 | with audio podcast

Image: The solar cycle

(Phys.org) —It took 10 years to create this image of our changing Sun. Taken from space by the Solar and Heliospheric Observatory (SOHO), it shows a dramatically different picture than the one we receive ...

Apr 01, 2014
5 / 5 (11) 0

Sun unleashes first X-class flare of 2014

The sun emitted a significant solar flare peaking at 1:32 p.m. EST on Jan.7, 2014. This is the first significant flare of 2014, and follows on the heels of mid-level flare earlier in the day. Each flare was ...

Jan 07, 2014
2.5 / 5 (22) 0