A Fresh Perspective on an Extraordinary Cluster of Galaxies

Galaxy clusters are often described by superlatives. After all, they are huge conglomerations of galaxies, hot gas, and dark matter and represent the largest structures in the Universe held together by gravity. via NASA http://ift.tt/1O1Z0os

Dark, Recurring Streaks on Walls of Garni Crater on Mars

Dark narrow streaks, called “recurring slope lineae,” emanate from the walls of Garni Crater on Mars, in this view constructed from observations by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter. via NASA http://ift.tt/1jrr9db

Supermoon Eclipse in New York City

A perigee full moon, or supermoon, is seen next to the Empire State Building at the beginning of a total lunar eclipse, Sunday, Sept. 27, 2015 in New York City. The combination of a supermoon and total lunar eclipse last occurred in 1982 and will not happen again until 2033. via NASA http://ift.tt/1O4Jeup

The Nile at Night

NASA astronaut Scott Kelly, recently past the halfway mark of his one-year mission to the International Space Station, photographed the Nile River during a nighttime flyover on Sept. 22, 2015. Kelly (@StationCDRKelly) wrote, “Day 179. The #Nile at night is a beautiful sight for these sore eyes. Good night from @space_station! #YearInSpace.” via NASA http://ift.tt/1FlJwu7

Supersonic Shock Waves of a T-38C Aircraft

This schlieren image of a T-38C aircraft was captured using the patent-pending BOSCO technique and then processed with NASA-developed code to reveal shock wave structures. Researchers at Armstrong and NASA’s Ames Research Center at Moffett Field, California, have developed new schlieren techniques based on modern image processing methods. via NASA http://ift.tt/1KPgwer

Clear Skies Over the United States

On Sept. 17, 2015, NASA astronaut Scott Kelly captured images and video from the International Space Station during an early morning flyover of the United States. Sharing with his social media followers, Kelly wrote, “Clear skies over much of the USA today. #GoodMorning from @Space_Station! #YearInSpace.” via NASA http://ift.tt/1imWoVW