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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Why are there so many different types of stars?
Back to Article List From the August 2025 issue Two factors result in so many different types of stars: the ...
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Is dew point or relative humidity more important for good astronomical seeing?
This view from the GOES-East satellite’s band 8 shows the atmosphere above the continental U.S. imaged at 6.2 microns, in ...
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Do black holes exist forever?
Back to Article List In 1974, Stephen Hawking proposed that black holes can evaporate. Hawking radiation, proposed by Stephen Hawking, ...
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Was there ever a planet between Mars and Jupiter?Â
Back to Article List From the April 2025 issue It is highly unlikely a planet ever existed in this location, ...
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What is the difference between a 2″ eyepiece and a 1¼” eyepiece?
Back to Article List From the March 2025 issue A 2" eyepiece delivers a wider true field of view than ...
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Do Saturn’s rings cast shadows?Â
This dramatic image of the ring shadows on Saturn was taken by Cassini July 16, 2005, when the rings were ...
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What will happen to the solar system when the Milky Way and Andromeda Galaxy merge?
Back to Article List From the February 2025 issue Predictions are uncertain, but the solar system may be pushed farther ...
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Why do the solar system’s planets have different compositions?Â
Back to Article List From the February 2025 issue While the composition of gas and dust in a molecular cloud ...
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After our Sun becomes a white dwarf and cools completely, what will be left?
Back to Article List From the January 2025 issue Our white dwarf Sun will cool for billions upon billions of ...
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