Before spacecraft, how did astronomers study the giant planets?
Back to Article List From the August 2025 issue Prior to flybys, scientists used mathematical laws and observation to determine ...
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Will Voyager 1 and 2 be damaged passing through the Oort Cloud?
Back to Article List From the August 2025 issue Your odds of winning the lottery are still 100,000 times larger ...
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Astronomers have spotted the most distant comet ever discovered
This snapshot shows the overall orbit and current position of Comet C/2025 D1 (Gröller) on March 11, 2025. Note that ...
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20 years ago, the discovery of Eris changed everything
Eris is too distant for even the largest telescopes to resolve into a disk. This artist’s concept shows astronomers’ best ...
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JWST reveals surprising surface chemistry is occurring on Pluto’s moon Charon
Back to Article List The space telescope spotted both carbon dioxide and hydrogen peroxide on the surface of this distant ...
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Uranus and Neptune have weird magnetic fields — this might be why
Back to Article List New models using Voyager 2 data from the 1980s show that separate layers in the planets’ ...
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Uranus may not have a weird magnetic field after all
Back to Article List A blast of solar radiation just before Voyager 2â€s arrival in 1986 may have misled researchers ...
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