astronomy   43610

« earlier    

Welcome to the Center of the Universe
When a mission launches into space, whether it is to Venus, Mars, or as far out as Pluto, we have to be able to track it, send commands, and receive data — all over a signal about as powerful as the wattage of a refrigerator light bulb. These faint whispers are hard to hear, and losing track of them for any length of time can be a harrowing experience. If the Deep Space Network goes down, if we permanently lose our connection to Cassini, it would not only be a loss of billions of dollars but also two decades of work.
space  astronomy 
yesterday by mookieproof
APOD: 2018 March 13 - The Complete Galactic Plane: Up and Down
A different astronomy and space science
related image is featured each day, along with a brief explanation.
APOD  astronomy 
yesterday by jiffyclub
APOD: 2018 March 16 - The Seagull and The Duck
Explanation: Seen as a seagull and a duck, these nebulae are not the only cosmic clouds to evoke images of flight. But both are winging their way across this broad celestial landscape, spanning almost 7 degrees across planet Earth's night sky toward the constellation Canis Major. The expansive Seagull (top center) is itself composed of two major cataloged emission nebulae. Brighter NGC 2327 forms the head with the more diffuse IC 2177 as the wings and body. Impressively, the Seagull's wingspan would correspond to about 250 light-years at the nebula's estimated distance of 3,800 light-years. At the lower right, the Duck appears much more compact and would span only about 50 light-years given its 15,000 light-year distance estimate. Blown by energetic winds from an extremely massive, hot star near its center, the Duck nebula is cataloged as NGC 2359. Of course, the Duck's thick body and winged appendages also lend it the slightly more dramatic popular moniker, Thor's Helmet.
astronomy  photography  APOD 
2 days ago by rgl7194
APOD: 2018 March 17 - The Crab from Space
Explanation: The Crab Nebula is cataloged as M1, the first object on Charles Messier's famous list of things which are not comets. In fact, the Crab is now known to be a supernova remnant, expanding debris from the death explosion of a massive star. This intriguing false-color image combines data from space-based observatories, Chandra, Hubble, and Spitzer, to explore the debris cloud in X-rays (blue-white), optical (purple), and infrared (pink) light. One of the most exotic objects known to modern astronomers, the Crab Pulsar, a neutron star spinning 30 times a second, is the bright spot near picture center. Like a cosmic dynamo, this collapsed remnant of the stellar core powers the Crab's emission across the electromagnetic spectrum. Spanning about 12 light-years, the Crab Nebula is 6,500 light-years away in the constellation Taurus.
astronomy  photography  APOD 
2 days ago by rgl7194
Amateur Canadian scientists discovered a new type of northern lights and promptly named it ‘Steve’ | Toronto Star
Donovan told him they couldn’t call it a proton arc, because it didn’t fit the physical properties. He suggested it needed a non-scientific name.

“I proposed we call it Steve and it stuck,” said Ratzlaff.

It’s a reference to the animated movie Over the Hedge about animals that encounter a giant hedge in their neighbourhood and get scared because they don’t know what it is.

“The squirrel comes up and says, ‘Let’s call it Steve’ ... and they are all OK with it.”

Ratzlaff said Steve was just meant to be a temporary name, but scientists have decided to keep it — only it now stands for Strong Thermal Emission Velocity Enhancement.
4 days ago by campion1581
Steve, a Famous Northern Light, Stays Mysterious (and Keeps His Name) - The New York Times
Steve is a glowing strip in the night sky, not far from the northern lights. It was named after a cartoon. Now scientists have learned more.
vacation  travel  astronomy  aurora  canada  astrophotography 
4 days ago by eddy

« earlier    

related tags

2018-03  ai  apod  arctic  art  article  articles  asteroids  astrobiology  astrophotography  astrophysics  aurora  auroras  bigbang  biographies  biology  blackholes  blog  calendar  camera  canada  celestial  chemistry  citizen-science  cnet  cool  cosmicbackgroundradiation  cosmology  cosmos  culture  darkmatter  data  date  deeplearning  discussion  engineering  ethnography  europe  exoplanet  exoplanets  exploration  extrasolar  fiction  galaxy  geometry  google  grade_a  habitable  hawaii  history  howto  ieee-spectrum  ifttt  illumination  images  infographic  interesting  interferometry  jupiter  latered  led-lighting  light  lighting  lunar  magnetic  math  mathematics  military  milkyway  moon  nasa  nature  news  observatories  orbit  philosophy  photography  physics  planet  planetary  planets  planning  pocket  poster  python  radio  reference  research  saturn  science  scienceforkids  sciences  scifi  seti  sociology  software  solar  space  star  stars  storyresearch  tech  theatlantic  thebigbang  thought-experiment  time  tour  travel  tutorial  tutorials  vacation  video  videos  visualization  voxmag  waterscope  wikipedia  wishlist  words 

Copy this bookmark: