On Aug. 18, 2023, the Mars Reconnaissance Orbiter (MRO) captured ridged lines carved onto Mars’ landscape by the gradual movement of ice. While surface ice deposits are mostly limited to Mars’ polar caps, these patterns appear in many non-polar Martian regions. As ice flows downhill, rock and soil a […]
2023年12月18日 The Same Color Illusion Image Credit: Edward H. Adelson, Wikipedia Explanation: Are squares A and B the same color? They are! To verify this, either run your cursor over the image or click here to see them connected. The featured illusion, an example of the same color illusion, illustrat
In this image from Dec. 17, 1903, Orville Wright makes the first powered, controlled flight on Earth as his brother Wilbur looks on. Orville Wright covered 120 feet in 12 seconds during the first flight of the day. The Wright brothers made four flights that day, each longer than the last. The aircra
“I was on console as a part of the primary launch team [for Artemis I]. I was the Orion system specialist for Guidance, Navigation, and Control. … In a few missions, we’re sending astronauts to the Moon again, so being a part of the very, very first mission [was memorable]. … I wasn’t here in 2017 w
2023年12月17日 Geminids over China’s Nianhu Lake Image Credit & Copyright: Hongyang Luo Explanation: Where are all of these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Gemini. That is why the major meteor shower in December is known as th
2023年12月16日 Crescent Enceladus Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA Explanation: Peering from the shadows, the Saturn-facing hemisphere of tantalizing inner moon Enceladus poses in this Cassini spacecraft image. North is up in the dramatic scene captured during November 2016 as Ca
2023年12月15日 Betelgeuse Eclipsed Image Credit & Copyright: Sebastian Voltmer Explanation: Asteroid 319 Leona cast a shadow across planet Earth on December 12, as it passed in front of bright star Betelgeuse. But to see everyone’s favorite red giant star fade this time, you had to stand nea
2023年12月14日 Supernova Remnant Cassiopeia A Image Credit: NASA, ESA, CSA, STScI; D. Milisavljevic (Purdue University), T. Temim (Princeton University), I. De Looze (University of Gent) Explanation: Massive stars in our Milky Way Galaxy live spectacular lives. Collapsing from vast cosmic clouds, their
On Aug. 8, 2023, Artemis II crew members (from left) Jeremy Hansen, Victor Glover, Reid Wiseman, and Christina Koch took a photo in front of their Orion crew module at NASA’s Kennedy Space Center in Florida. Announcing the crew and continuing work on the Space Launch System rocket and Orion are part
2023年12月13日 Deep Field: The Heart Nebula Image Credit & Copyright: William Ostling, Telescope Live Explanation: What excites the Heart Nebula? First, the large emission nebula on the left, catalogued as IC 1805, looks somewhat like a human heart. The nebula glows brightly in red light emitted b
