By at least 1 definition, the year 2017 has 4 supermoons. Three are new moons and not visible in our sky. The only full moon supermoon of 2017 will come in December.
Photo by Rebecca Lacey in Cambridge, Idaho
When astronomers aimed the Very Large Array at the well-studied galaxy Cygnus A, they were surprised to find a bright new object near the galaxy’s core. Supernova explosion, or a second supermassive black hole?
Image via Bill Saxton, NRAO/AUI/NSF.
This year’s list includes a spider and an ant with names drawn from popular books, a pink katydid and an omnivorous rat.
Image via IISE
The shortest lunar month of 2017 starts with the May 25 new moon, which is also the closest new moon of the year. Coincidence?
The moon's orbit around Earth is not a perfect circle. But it is very nearly circular, as the above diagram shows. Diagram by Brian Koberlein.
It’s not just any supermoon, but the closest and largest supermoon of 2017. The young moon that follows this new moon will mark the beginning of Ramadan.
The entire northern sky wheels around Polaris. But it’s not the brightest star in the sky. In fact, Polaris ranks only 50th in brightness.
Ken Christison captured these glorious star trails around Polaris, the North Star. He wrote, "For the most common and often the most spectacular star trails, you want to locate Polaris
and compose the image so it is centered horizontally and hopefully you can have a bit of foreground for reference." See more photos from Ken Christison.
Happening now in Denmark: “bright nights,” when the sun is never far below the horizon. Photographer and videographer Adrien Mauduit tells the story and provides stunning imagery.
For the first time, astronomers have found a spectacularly long jet – nearly a light-year long – from a brown dwarf.
The HH 1165 jet launched by a brown dwarf in the outer periphery of the sigma Ori cluster. Traced by emission from singly ionized sulfur, which appears green in the image, the jet extends 0.7 light years (equivalent to 0.2 parsecs) northwest of the brown dwarf. Image via NOAO.
You’ve probably heard star names, such as Polaris or Betelgeuse. But what about our star? Does the sun have a name, and if so what is it?
Photo Credit: NASA