https://www.smithsonianmag.com/rss/tag/solar-system/RSS feed for Solar SystemenWed, 30 Sep 2026 18:00:14 +0000https://www.smithsonianmag.com/smart-news/could-saturns-moon-enceladus-host-alien-life-earth-microbes-can-live-in-its-simulated-environment-boosting-its-potential-habitability-180989589/Enceladus is covered in ice, but that layer might hide a subsurface ocean. Researchers have long wondered if the salty body of water has the right conditions to host life, and now, a team suggests that an Earthly, heat-loving organism could thrive thereWed, 30 Sep 2026 18:00:14 +0000https://www.smithsonianmag.com/smart-news/could-saturns-moon-enceladus-host-alien-life-earth-microbes-can-live-in-its-simulated-environment-boosting-its-potential-habitability-180989589/https://www.smithsonianmag.com/smart-news/mercury-has-wrinkles-that-show-its-shrinking-now-scientists-say-the-planet-has-shriveled-far-more-than-we-previously-thought-180989532/A new study suggests that our solar system’s smallest planet has shrunk by up to 30 percent since its birth roughly 4.5 billion years agoTue, 22 Sep 2026 19:12:34 +0000https://www.smithsonianmag.com/smart-news/mercury-has-wrinkles-that-show-its-shrinking-now-scientists-say-the-planet-has-shriveled-far-more-than-we-previously-thought-180989532/https://www.smithsonianmag.com/smart-news/the-moon-just-got-a-massive-new-crater-thats-wider-than-two-end-to-end-football-fields-its-a-once-in-a-lifetime-observation-180989526/The impact crater was formed in 2024 when an object the size of a multistory building crashed into our lunar companion. The resulting divot is about 728 feet wide and 141 feet deepFri, 18 Sep 2026 19:04:38 +0000https://www.smithsonianmag.com/smart-news/the-moon-just-got-a-massive-new-crater-thats-wider-than-two-end-to-end-football-fields-its-a-once-in-a-lifetime-observation-180989526/https://www.smithsonianmag.com/smart-news/billions-of-years-ago-venus-may-have-had-a-moon-which-the-planet-promptly-gobbled-up-study-suggests-180989510/Scientists have puzzled over why the planet dubbed "Earth's twin" doesn't have a moon. Computer simulations hint that if Venus ever did have one, it probably would've cannibalized its companionThu, 17 Sep 2026 15:00:00 +0000https://www.smithsonianmag.com/smart-news/billions-of-years-ago-venus-may-have-had-a-moon-which-the-planet-promptly-gobbled-up-study-suggests-180989510/https://www.smithsonianmag.com/smart-news/after-an-eight-year-journey-two-spacecraft-have-begun-their-arrival-to-mercury-the-inner-solar-systems-most-mysterious-planet-180989458/The BepiColombo mission, by the European Space Agency and the Japan Aerospace Exploration Agency, is only the third to study our smallest planetary neighborFri, 04 Sep 2026 18:48:20 +0000https://www.smithsonianmag.com/smart-news/after-an-eight-year-journey-two-spacecraft-have-begun-their-arrival-to-mercury-the-inner-solar-systems-most-mysterious-planet-180989458/https://www.smithsonianmag.com/smart-news/a-mysterious-decagon-unexpectedly-appeared-around-saturns-south-pole-the-ten-sided-shape-seems-to-be-a-wave-in-the-atmosphere-180989449/Decades ago, scientists found a hexagon around Saturn’s north pole. Now, recent images reveal a decagon in the planet’s southern hemisphere—and it seems to have recently formedThu, 03 Sep 2026 19:01:23 +0000https://www.smithsonianmag.com/smart-news/a-mysterious-decagon-unexpectedly-appeared-around-saturns-south-pole-the-ten-sided-shape-seems-to-be-a-wave-in-the-atmosphere-180989449/https://www.smithsonianmag.com/smart-news/mars-southern-half-is-weirdly-warm-underground-the-thermal-anomaly-might-explain-why-the-planets-hemispheres-look-so-different-180989424/Researchers used a novel technique to figure out what's going on inside the Red Planet. The work suggests that the interior of the southern hemisphere is hundreds of degrees hotter than that of the northern hemisphere and partially moltenTue, 01 Sep 2026 15:47:38 +0000https://www.smithsonianmag.com/smart-news/mars-southern-half-is-weirdly-warm-underground-the-thermal-anomaly-might-explain-why-the-planets-hemispheres-look-so-different-180989424/https://www.smithsonianmag.com/smart-news/turn-your-eyes-to-the-night-skies-this-week-to-see-a-near-total-lunar-eclipse-itll-temporarily-turn-the-moon-red-180989404/During the peak, 96 percent of the moon will be within the darkest part of our planet's shadow. The orb will take on an eerie glow because of how sunlight gets filtered through Earth's atmosphereWed, 26 Aug 2026 18:57:29 +0000https://www.smithsonianmag.com/smart-news/turn-your-eyes-to-the-night-skies-this-week-to-see-a-near-total-lunar-eclipse-itll-temporarily-turn-the-moon-red-180989404/https://www.smithsonianmag.com/science-nature/once-the-solar-systems-ninth-planet-pluto-was-reclassified-20-years-ago-heres-why-planetary-scientists-and-the-public-alike-love-the-small-icy-body-180989383/Pluto is now the most well known of the outer worlds beyond Neptune—and the darling of the solar systemMon, 24 Aug 2026 17:00:00 +0000https://www.smithsonianmag.com/science-nature/once-the-solar-systems-ninth-planet-pluto-was-reclassified-20-years-ago-heres-why-planetary-scientists-and-the-public-alike-love-the-small-icy-body-180989383/https://www.smithsonianmag.com/smart-news/nasa-completes-daring-big-bang-fix-on-the-voyager-2-probe-allowing-it-to-keep-studying-interstellar-space-180989312/Scientists swapped three of the probe’s heating devices for ones that use less energy, and they might do the same with Voyager 1. Both spacecraft launched almost 50 years agoWed, 12 Aug 2026 20:09:24 +0000https://www.smithsonianmag.com/smart-news/nasa-completes-daring-big-bang-fix-on-the-voyager-2-probe-allowing-it-to-keep-studying-interstellar-space-180989312/https://www.smithsonianmag.com/smart-news/stunning-new-images-reveal-whirlpools-on-the-suns-surface-the-swirling-strutures-might-help-power-solar-flares-180989292/Observed directly in the solar photosphere for the first time, the vortices might braid magnetic fields, thought to be responsible for energy buildups and eventual outbursts. The features also offer clues about why the sun’s outer atmosphere is millions of degrees hotter than its surfaceWed, 12 Aug 2026 18:19:56 +0000https://www.smithsonianmag.com/smart-news/stunning-new-images-reveal-whirlpools-on-the-suns-surface-the-swirling-strutures-might-help-power-solar-flares-180989292/https://www.smithsonianmag.com/science-nature/like-a-hole-in-the-universe-artemis-2-astronaut-victor-glover-reflects-on-seeing-a-total-solar-eclipse-while-flying-by-the-moon-180989284/The four astronauts who rounded Earth’s natural satellite in April got an extremely rare view of the dark lunar disk blocking out the sun. Researchers say the observations provide unique scientific value for understanding our star’s mysteriesMon, 10 Aug 2026 14:11:30 +0000https://www.smithsonianmag.com/science-nature/like-a-hole-in-the-universe-artemis-2-astronaut-victor-glover-reflects-on-seeing-a-total-solar-eclipse-while-flying-by-the-moon-180989284/https://www.smithsonianmag.com/smart-news/neptune-may-have-once-witnessed-a-lunar-massacre-that-turned-its-original-moons-inside-out-180989266/A new study identifies an unexpected mineral in two of the planet’s inner moons, pointing to a destructive past in which a large object got pulled into the system and obliterated the former, larger satellitesWed, 05 Aug 2026 20:51:47 +0000https://www.smithsonianmag.com/smart-news/neptune-may-have-once-witnessed-a-lunar-massacre-that-turned-its-original-moons-inside-out-180989266/