Science

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Ten Suns for 10 years

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Ten Suns for 10 years

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Ozone hole set to close

The size of the ozone hole fluctuates – usually forming each year in August, with its peak in October, before finally closing in late November or December. Not only will the hole close earlier than usual in 2019, but it is also the smallest it has been in 30 years owing to unusual atmospheric conditions.

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Ozone_hole_set_to_close_pillars.

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A Third of California Methane Traced to a Few Super-Emitters

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Views from NASA's Methane Source Finder, a tool that provides methane data for the state of California. The data are derived from airborne remote-sensing, surface-monitoring networks and satellites and are presented on an interactive map alongside infrastructure information.

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NASA’s Coating Technology Could Help Resolve Lunar Dust Challenge

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Apollo-era astronauts attracted a lot of Moon dust as they worked on the lunar surface. Goddard technologists are experimenting with different techniques to prevent the attraction when NASA returns to the Moon next decade.

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Voyager 2 Illuminates Boundary of Interstellar Space

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This artist's concept shows one of NASA's Voyager spacecraft entering interstellar space, or the space between stars. This region is dominated by plasma ejected by the death of giant stars millions of years ago. Hotter, sparser plasma fills the environment inside our solar bubble.

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Halloween crack

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Halloween crack

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25 Years of Science in the Solar Wind

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(B) An artist's illustration of the Wind spacecraft, which launched 25 years ago in 1994.

(C) NASA missions continue to use Faraday cups to study the solar wind, much like the Solar Wind Experiment from Wind that launched in 1994, on the left. On the right is the Parker Solar Cup aboard Parker Solar Probe, which launched in 2018.

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Driving into the future

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Driving into the future

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WFIRST Will Add Pieces to the Dark Matter Puzzle

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Entangled among the galaxies in this Hubble image are mysterious-looking arcs of blue light. These are actually distorted images of remote galaxies behind the cluster. The collective gravity of all the normal and dark matter trapped inside the cluster warps space-time and affects light traveling through the cluster toward Earth.

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Spitzer Telescope Spots a Ghoulish Gourd

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This infrared image from NASA's Spitzer Space telescope shows a cloud of gas and dust carved out by a massive star. A drawing overlaid on the image reveals why researchers nicknamed this region the "Jack-o'-lantern Nebula."