Here are some of the most beautiful photos of the universe taken recently
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NO.1
版权NASA／JPL－Caltech／Space Science Institute 23/10/2015
The cassini probe's narrow-angle camera captured Saturn's moons: Pandora and Mimas, 781,000 kilometers away on July 26, 2015. Pandora is only 81 km in diameter, small and irregular, and its elongated shape and low density may be related to its formation – at first Pandora had only a high-density core, and later the material on Saturn's rings was adsorbed to form such a strange shape. Mimas is a medium-sized satellite with a diameter of 396 kilometers that has become spherical under its own gravity. We can learn about the history of satellites from their shapes.
NO.2
Copyright Scott · Kelly 22/10/2015
American astronaut Scott Kelly photographed the Earth's horizon from the International Space Station on the 21st, when the sun was rising, and the picture was like an abstract painting. He tweeted "#GoodMorning sunshine!" The horizon was brilliant this morning. #YearInSpace.”
NO.3
版权NASA，JPL Caltech，UCLA，MPS，DLR，IDA 19/10/2015
The southern hemisphere surface of the dwarf planet Ceres was photographed by the Dawn probe on Sept. 20 from 1470 kilometers away. Dawn was launched on September 27, 2007, and has been reconnaissance around the large primordial planet Vesta for 11 to 12 years.
NO.4
Copyright ESA, HUBBLE, NASA 19/10/2015
The Messier 94 galaxy, 16 million light-years from Earth, is in the constellation Hunting Dogs. There are many young, bright stars there, and the star formation rate is super fast. The reason may be that shock waves spreading outward from the center of the galaxy compress the material (gas and dust) within the galaxy, causing the matter to collapse into denser clouds, and finally gravity to gather the material until the temperature and pressure are high enough for the star to form.
NO.5
Copyright Greg · Redfern 8/10/2015
Greg Redfern, also known as the Virginia Skywatcher, captured the Andromeda galaxy (M31). M31 is the closest galaxy to the Milky Way, located 2.5 million light-years from Earth. In the cloudless night sky, looking at the M31 galaxy will give you a glimpse into history, because what you see will be what M31 looked like 2.5 million years ago.
NO.6
Copyright Adam · Woodworth 8/10/2015
Space photographer Adam Woodworth photographs the Aurora Borealis on Katatin Peak in Maine. He wrote an email to space.com and said, "This is one of the photos I dreamed of taking, and tonight all the elements are complete, so lucky!" The beautiful colors appeared on the river, the wind stopped slightly so that we could take the perfect reflection, and the clouds avoided us to see the aurora. Nature is so generous! In low light, the human eye cannot directly see such auroras on the picture, but can only observe bright areas near the horizon, and occasionally sharp lights. Conversely, the camera does not have such limitations, and long exposures bring out all the details and colors. The whole aurora process lasts only a few minutes, but in these few minutes, the sky dome flickers and is magical! ”
NO.7
Copyright NASA, JPL Caltech/MSSS 6/10/2015
Selfie of NASA's Curiosity Mars rover. It is located in the "Big Sky" area and is preparing for its fifth drilling operation on Mount Sharp. This image is actually a composite of dozens of photos, all taken by mahli cameras on Curiosity's robotic arm. The proportions, horizons, etc. are a bit strange, you can see the reflection of the mechanical arm but you can't see the mechanical arm itself, and the ground should be flat but it is oblique. In terms of proportions, Curiosity's tires are 50 cm in diameter and 40 cm in width.
NO.8
Copyright ESA, Hubble, NASA 12/10/2015
The spiral galaxy NGC 4639 is 70 million light-years away and is in the constellation Virgo. This image, taken by the Hubble Space Telescope, shows bands orbiting the center of the galaxy. About two-thirds of spiral galaxies have bands — a normal process of galaxy evolution. The center of NGC 4639, like all galaxies, has a massive black hole that swallows up the surrounding gas.
NO.9
Copyright ESO/M. McCaughrean 12/9/2015
The Hebig Harrow 212 (HH 212) shoots two nearly perfectly symmetrical jet streams. HH 212 is in the constellation of Orion, not far from the Horsehead Nebula. In its center is a star that is only a few thousand years old, surrounded by a disk of material formed by the remaining material after the formation of the star. The jet stream is symmetrical, with a node at intervals of a specific distance, indicating that the jet flow changes more regularly, and the change period may be as frequent as once every 30 years. Photo shooting: ESO's deactivated Infrared Spectrometer and Camera Array (ISAAC).
Source: space.com
Translator: Leo, Proofreader/Editor: Primary Three
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