Explanation: Did this meteor come from that comet? Probably not. Although many meteors do originate from comets, there are thousands of comets that have visited the inner Solar System recently, and matching meteors to them can be tricky. And to be clear, the pictured comet is far behind the streaking meteor. Comet C/2025 R3 (PanSTARRS) was captured from Hautacam, France in April when the giant space iceberg sported impressive ion (blue) and dust tails. Sand-sized rocky debris that enters Earth’s atmosphere typically appears as meteors, while the colorful foreground streak here may indicate a complicated composition. This month three notable meteor showers will reach their peaks. Over the next few days, the Southern Taurids will be reaching their apex, while the Northern Taurids will top out about a week later. Both originate from Comet 2P/Encke. November is most famous for the Leonids Meteor Shower, though, which originates from Comet 55P/Tempel-Tuttle and will reach its crescendo in about two weeks.
Tomorrow’s picture: open space
Explanation: What’s causing this unusually long cloud on Mars? Known as the Arsia Mons Elongated Cloud (AMEC) and first recorded by NASA’s Viking Orbiter 2 in 1977, the strange cloud has been imaged in greater detail more recently by ESA’s robotic Mars Express spacecraft. The featured image is from 2018. The cloud forms only during spring and summer seasons and then only during morning hours. Made of water-ice, the most familiar process that causes cloud crystals to form around bits of dust would fail due to the thinness and lack of dust high in the Martian atmosphere. Leading speculation holds that dust is not involved. After the cloud forms near the volcano Arsia Mons, wind blows the cloud downstream — creating a tail that can extend over 1500 kilometers. Efforts to better understand AMECs will continue, an understanding that may bolster a more complete view of cloud formation on Earth.
Tomorrow’s picture: eyeing a cat
