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The Sun: Five years in three minutes

The Sun. Credit: NASA Solar Dynamics Observatory.
This amazing video of the sun from NASA’s Solar Dynamics Observatory (SDO) shows five years of sun time in three minutes. The SDO scientists took a picture of the sun [...]

First solar flare of 2015

An medium-size solar flare erupts from the right side of the sun in this image in the early morning of 13 January, 2015 (British time). The image was recorded using two wavelengths (171 and 304 angstroms) of light too energetic for our eyes to see, as captured by NASA's Solar Dynamics Observatory. Credit: NASA/Solar Dynamics Observatory
The sun emitted its first notable solar flare, peaking in the early morning of 13 January, 2015. Solar flares are powerful bursts of radiation – a sort of non-visible [...]

Superstar Eta Carinae

Eta Carinae's great eruption in the 1840s created the billowing Homunculus Nebula, imaged here by Hubble. Now about a light-year long, the expanding cloud contains enough material to make at least 10 copies of our sun. Astronomers cannot yet explain what caused this eruption. Image Credit: NASA, ESA, and the Hubble SM4 ERO Team
Eta Carinae is the most luminous and massive stellar system within 10,000 light-years of Earth (the distance light travels in 10,000 years). It is known for its surprising [...]

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