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Dark Origins
Some of the brightest sources of light in the sky come from the regions around black holes in the centers of galaxies. The Fermi Gamma-ray Space Telescope has found thousands of these kinds of galaxies since it launched in 2008, helping us better understand how the universe came to be the way it is now.
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Adding Dimension to Cassiopeia A
Cassiopeia A (Cas A) is a supernova remnant located about 11,000 light-years from Earth in the constellation Cassiopeia. It spans approximately 10 light-years.
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Earth Information Center
Explore our changing planet
For more than 50 years, NASA satellites have provided data on Earth’s land, water, air, temperature, and climate. NASA’s Earth Information Center allows visitors to see how our planet is changing in six key areas: sea level rise and coastal impacts, health and air quality, wildfires, greenhouse gases, sustainable energy, and agriculture.
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