2021年10月9日 50 Light-years to 51 Pegasi Image Credit & Copyright: Josselin Desmars Explanation: It’s only 50 light-years to 51 Pegasi. That star’s position is indicated in this snapshot from August, taken on a hazy night with mostly brighter stars visible above the dome at Observatoi […]
2021年10月8日 The Double Cluster in Perseus Image Credit & Copyright: Jack Groves Explanation: This pretty starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as N
2021年10月7日 NGC 6559: East of the Lagoon Image Credit & Copyright: Roberto Sartori Explanation: Slide your telescope just east of the Lagoon Nebula to find this alluring field of view in the rich starfields of the constellation Sagittarius toward the central Milky Way. Of course the Lagoon nebul
2021年10月6日 M43: Streams of Orion Image Credit & Copyright: Jari Saukkonen Explanation: Where do the dark streams of dust in the Orion Nebula originate? This part of the Orion Molecular Cloud Complex, M43, is the often imaged but rarely mentioned neighbor of the more famous M42. M42, seen in par
2021年10月5日 Sunrise at the South Pole Image Credit & Copyright: Martin Wolf (U. Wisconsin), IceCube Neutrino Obs., NSF; ht: Alice Allen Explanation: Sunrise at the South Pole is different. Usually a welcome sight, it follows months of darkness — and begins months of sunshine. At Earth̵
2021年10月4日 NGC 4676: When Mice Collide Image Credit: NASA, ESA, Hubble; Processing & Copyright: William Ostling (The Astronomy Enthusiast) Explanation: These two mighty galaxies are pulling each other apart. Known as the “Mice” because they have such long tails, each spiral galaxy h
2021年10月3日 The Holographic Principle and a Teapot Image Credit: Caltech Explanation: Sure, you can see the 2D rectangle of colors, but can you see deeper? Counting color patches in the featured image, you might estimate that the most information that this 2D digital image can hold is about 60 (horiz
2021年10月2日 A Light and Dusty Night Image Credit & Copyright: Rodrigo Guerra Explanation: Posing as a brilliant evening star, Venus lies near the western horizon in this southern hemisphere, early spring, night skyscape. To create the composite view exposures tracking the sky and fixed for the f
2021年10月1日 The Central Milky Way from Lagoon to Pipe Image Credit & Copyright: Gabriel Rodrigues Santos Explanation: Dark markings and colorful clouds inhabit this stellar landscape. The deep and expansive view spans more than 30 full moons across crowded star fields toward the center of our Mi
2021年9月30日 The Hydrogen Clouds of M33 Image Credit & Copyright: Luca Fornaciari Explanation: Gorgeous spiral galaxy M33 seems to have more than its fair share of glowing hydrogen gas. A prominent member of the local group of galaxies, M33 is also known as the Triangulum Galaxy and lies a mere 3
