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Picture of the day
Tomorrow begins the annual MassKara Festival in the Philippines, one of the most important celebrations in the country since 1980.
Media of the day
In this very sped-up artist's impression showing a collection of distant galaxies, the occasional supernova can be seen. Each of these exploding stars briefly rivals the brightness of its host galaxy. One class of supernovae, Type Ia, which results from thermonuclear runaway explosions on white dwarf stars in binary systems, has been used to map out the expansion rate of the Universe. This work led to the discovery of the accelerating expansion of the Universe and was awarded with the 2011 Nobel Prize for Physics.
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Monthly photo challenge
Take some photos and upload them to meet our monthly thematic challenge, get inspiration and try new subjects! Learn more about the challenges! Highlights
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