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Category Archives: stars

Red giant Sun, dead Earth

Credit: fsgregs/Wikimedia Commons.

via Centauri Dreams



A previous post here featured “Giant Star Betelgeuse” – here’s a bit of perspective on just how gigantic this giant actually is!

via Physorg


via Universe Today

via Science Daily


via Universe Today


Altair is the brightest star in the constellation Aquila and the twelfth brightest star in the nighttime sky, at visual magnitude 0.77.


This image is arguably the most accurate depiction of a star beyond our sun ever rendered. It is based on an actual direct imaging of the star Altair. Using four independent telescopes, a group of scientists led by the University of Michigan was able to capture a direct image of the star 100 times sharper than the best Hubble images of the star.

Actual image of altair

The flattened appearance of the Altair is due to its extremely rapid rotation, effectively flattening the star at the poles.