https://www.smithsonianmag.com/rss/tag/planets/RSS feed for PlanetsenMon, 19 Oct 2026 19:41:00 +0000https://www.smithsonianmag.com/smart-news/scientists-dont-know-how-mars-acquired-its-two-moons-japan-just-launched-a-historic-space-mission-that-will-fetch-samples-to-find-out-180989713/The Japan Aerospace Exploration Agency's spacecraft is expected to reach the Martian system in August 2027 and return samples from the moon Phobos to Earth in 2031Mon, 19 Oct 2026 19:41:00 +0000https://www.smithsonianmag.com/smart-news/scientists-dont-know-how-mars-acquired-its-two-moons-japan-just-launched-a-historic-space-mission-that-will-fetch-samples-to-find-out-180989713/https://www.smithsonianmag.com/smart-news/researchers-may-have-directly-glimpsed-an-exoplanets-magnetic-field-for-the-first-time-building-hope-of-peering-deeper-into-faraway-worlds-180989633/Radio signals emanating from Beta Pictoris b suggest that this young and massive exoplanet has a strong magnetic field and intense auroral showWed, 07 Oct 2026 16:07:13 +0000https://www.smithsonianmag.com/smart-news/researchers-may-have-directly-glimpsed-an-exoplanets-magnetic-field-for-the-first-time-building-hope-of-peering-deeper-into-faraway-worlds-180989633/https://www.smithsonianmag.com/smart-news/like-a-mythical-phoenix-this-planet-may-have-risen-from-the-ashes-of-a-dead-star-180989628/The “second-generation” world, predicted from telescope data, could be the first known planet of its kind, and it may shed light on the future of our own solar systemWed, 07 Oct 2026 12:22:19 +0000https://www.smithsonianmag.com/smart-news/like-a-mythical-phoenix-this-planet-may-have-risen-from-the-ashes-of-a-dead-star-180989628/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/nasas-nancy-grace-roman-space-telescope-launches-to-find-exoplanets-and-unravel-mysteries-of-dark-matter-and-dark-energy-180989268/The new observatory will complete three surveys of the universe in five years, although it's designed to function at least twice as long. Its data could change scientists' basic understanding of the cosmosSun, 30 Aug 2026 11:26:00 +0000https://www.smithsonianmag.com/smart-news/nasas-nancy-grace-roman-space-telescope-launches-to-find-exoplanets-and-unravel-mysteries-of-dark-matter-and-dark-energy-180989268/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/