The Photopic Sky Survey is a 5,000 megapixel photograph of the entire night sky stitched together from 37,440 exposures. Large in size and scope, it portrays a world far beyond the one beneath our feet and reveals our familiar Milky Way with unfamiliar clarity.
This amazing image takes all 1,235 of the candidate planets spotted by NASA's Kepler telescope, and then shows them in orbit around their stars. And all of this is still just the tiniest fraction of the entire Milky Way.
The universe may glitter with more stars than Carl Sagan imagined when he talked about billions upon billions. A new study suggests there are a mind-blowing 300 sextillion -- or three times as many as scientists had calculated. That is a 3 followed by 23 zeros. Or 3 trillion times 100 billion.
A hundred million years ago, a triple-star system was traveling through the bustling center of our Milky Way galaxy when it made a life-changing misstep. The trio wandered too close to the galaxy's giant black hole, which captured one of the stars and hurled the other two out of the Milky Way.
The European Space Agency's Planck mission has delivered its first all-sky image. It not only provides new insight into the way stars and galaxies form but also tells us how the Universe itself came to life after the Big Bang.