Lasers and mirrors are used to carefully measure shifts in space-time. To avoid contamination, protective clothing must be worn at all times. LIGO Lab/Caltech/MIT hide caption

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LIGO Lab/Caltech/MIT

How To Catch The Biggest Wave In The Universe

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The pair of galaxies NGC 1531/2, engaged in a spirited waltz, is located about 70 million light-years away toward the southern constellation Eridanus (The River). R. Gendler and J.E. Ovaldsen/ESO/IDA hide caption

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R. Gendler and J.E. Ovaldsen/ESO/IDA

Does The Size Of Space Freak You Out?

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(Top row, left to right) Titan, Earth's moon, Europa and Enceladus. (Bottom row, left to right) Callisto, Charon, Ariel and lo. NASA hide caption

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NASA

Hot On The Trail Of Alien Moons

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This computer-simulated image shows a supermassive black hole at the core of a galaxy. The cosmic monster's powerful gravity distorts space around it like the mirror in a fun house, smearing the light from nearby stars. NASA/ESA/D. Coe, J. Anderson and R. van der Marel (Space Telescope Science Institute) hide caption

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NASA/ESA/D. Coe, J. Anderson and R. van der Marel (Space Telescope Science Institute)

Supermassive Black Holes May Be More Common Than Anyone Imagined

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An artist's impression of the superluminous supernova as it would appear from a planet in the same galaxy, about 10,000 light-years away. The exploding star is 570 billion times brighter than our sun. Jin Ma/Beijing Planetarium/Science hide caption

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Jin Ma/Beijing Planetarium/Science

Record-Busting Star Explosion Baffles Sky Watchers

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A new study shows energy output from 200,000 galaxies is half what it was billions of years ago. It's further evidence the universe is slowly declining. This undated NASA Hubble Space Telescope image shows the spiral galaxy NGC 1512 captured in all wavelengths from ultraviolet to infrared. Kevin Dietsch/UPI/Landov hide caption

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Kevin Dietsch/UPI/Landov

The Hooker 100-inch reflecting telescope at the Mount Wilson Observatory, just outside Los Angeles. Edwin Hubble's chair, on an elevating platform, is visible at left. A view from this scope first told Hubble our galaxy isn't the only one. Courtesy of The Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, Calif. hide caption

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Courtesy of The Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, Calif.

Hubble's Other Telescope And The Day It Rocked Our World

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A giant cluster of about 3,000 stars called Westerlund 2. The cluster resides in a raucous stellar breeding ground known as Gum 29, located 20,000 light-years away in the constellation Carina. NASA, ESA, STScI/AURA hide caption

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NASA, ESA, STScI/AURA

After 25 Years, The Hubble Space Telescope Still Wows Humanity

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The star in the center, as seen by the Hubble Space Telescope, is known as V1331 Cyg and is located in the dark cloud LDN 981. Karl Stapelfe/ESA/Hubble, NASA hide caption

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Karl Stapelfe/ESA/Hubble, NASA

The Horsehead Nebula, as seen with infrared light, shows clouds surrounding it have already dissipated. The Horsehead formation has about 5 million years left before it, too, disintegrates. NASA/ESA hide caption

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NASA/ESA

25 Years On: How Hubble's Vision Became Our Own

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2011: In the early 21st century, attempts to visualize such complex ephemeral phenomena as ocean currents, wind direction, and speed grew increasingly sophisticated, as the volume of real-time data increased and supercomputers proved capable of processing it. This ocean surface current visualization was produced by NASA's Goddard Space Flight Center. Greg Shirah, Horace Mitchell, Hong Zhang and Dimitris Menemenlis/Courtesy of NASA Goddard Space Flight Center Scientific Visualization Studio hide caption

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Greg Shirah, Horace Mitchell, Hong Zhang and Dimitris Menemenlis/Courtesy of NASA Goddard Space Flight Center Scientific Visualization Studio

Strontium atoms floating in the center of this photo are the heart of the world's most precise clock. The clock is so exact that it can detect tiny shifts in the flow of time itself. Courtesy of the Ye group and Brad Baxley/JILA hide caption

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Courtesy of the Ye group and Brad Baxley/JILA

New Clock May End Time As We Know It

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