A trip to #Yellowstone #NationalPark isn’t complete without seeing Midway Geyser Basin. A boardwalk leads you to the colorful #GrandPrismaticSpring. At 370 feet in diameter and over 121 feet deep, Grand Prismatic is @yellowstonenps’s largest hot spring. This jaw-dropping multi-image panorama shows Grand Prismatic Spring at night with the #MilkyWay sparkling above it and the stars reflected in the water below. Image courtesy of David Lane. ????
On this day in 1861, the first major battle of the #CivilWar -- the First Battle of #BullRun -- unfolded on the slopes of Henry Hill and Matthews Hill. Also know as the Battle of First #Manassas, Bull Run taught both the North and South that the war would not be a short affair, settled through one decisive and epic battle. Today the Manassas National Battlefield Park provides visitors the opportunity to learn about the Civil War through historic sites, walking trails and ranger-led programs. #NationalPark Service Photo.
Animated Flyover of Pluto’s Icy Mountain and Plains: This simulated flyover of Pluto’s Norgay Montes (Norgay Mountains) and Sputnik Planum (Sputnik Plain) was created from New Horizons closest-approach images. Norgay Montes have been informally named for Tenzing Norgay, one of the first two humans to reach the summit of Mount Everest. Sputnik Planum is informally named for Earth’s first artificial satellite. The images were acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as a half-mile (1 kilometer) across are visible. Credit: NASA/JHUAPL/SWRI #nasa #pluto #plutoflyby #space #newhorizons #nasabeyond #solarsystem #science
Stunning Spiral Galaxy! This little-known galaxy is a classic example of a spiral galaxy. The galaxy is much like our own galaxy, the Milky Way. The disk-shaped galaxy is seen face on, revealing the winding structure of the spiral arms. Dark patches in these spiral arms are in fact dust and gas ? the raw materials for new stars. The many young stars that form in these regions make the spiral arms appear bright and bluish. Image credit: ESA/Hubble & NASA #nasa #hubble #hubble25 #nasabeyond #space #galaxy #science
Although the Quintuplet Cluster gained its name due to its five brightest stars, it is home to hundreds more. The huge number of massive young stars in the cluster is clearly captured in this Hubble Space Telescope image. The cluster is just 100 light-years from the center of our galaxy. The Quintuplet Cluster hosts two extremely rare luminous blue variable stars: the Pistol Star, one of the most luminous known stars in the Milky Way. The exact age and future of the Pistol Star are uncertain, but it is expected to end in a supernova or even a hypernova in one to three million years. The cluster also contains a number of red supergiants, the largest in the galaxy and are burning their fuel at an incredible speed, meaning they will have a very short lifetime. Image credit: ESA/NASA #nasa #space #hubble #hubble25 #astronomy #galaxy #telescope #hst #science
U.S. soldiers fire the 120mm main gun of an @usarmy M1A2 Abrams tank to prepare for a live-fire tank shoot during Operation Speed and Power as part of Atlantic Resolve South on Novo Selo Training Area, Bulgaria, June 24, 2015. The soldiers are assigned to 3rd Battalion, 69th Armor Regiment. U.S. Army photo by Sgt. Alan Brutus
A Marine conducts a high-altitude, low-opening jump during sustainment training in Louisburg, N.C., June 2, 2015. The Marine is assigned to the 26th Marine Expeditionary Unit’s Maritime Raid Force, which is preparing to deploy to the U.S. 5th Fleet and U.S. 6th Fleet areas of responsibility later this year. U.S. #Marine Corps photo by Cpl. Andre Dakis
Pumpkins or fish?! Is it just us or do these red gapers look a little like pumpkins? Like if you agree! Red gapers are native to deep waters in the western North #Atlantic. Happy Halloween from @NOAAFisheries. See more fish #photos right here: http://1.usa.gov/OnKdZt. #halloween #sea #ocean #fish #deepsea #spooky #fun #noaafisheries #fish #pumpkin #nofilter #strange #creature
Open wide for more shark science: basking sharks are the second largest sharks in the ocean (the first is the whale shark). These gentle giants are docile; they have very small teeth and are no threat to humans. @noaafisheries scientist are using satellite tags to track their movements and find out what more about their habitat. They are named basking sharks because they can often be found "basking" on the surface on the water, filter feeding. #noaasharkweek #shark #science #sharkweek #conservation
Of all the sea turtle species, leatherback sea turtles experience the most dramatic growth from birth to maturation. Hatchlings are 2-3 inches & weigh about 2 oz. but can grow to 6.5 ft & weigh 2000 lbs! Despite their large size, they remain one of the most endangered sea turtles, and one of the more difficult species to study. Leatherback nesting population estimates and trends are especially difficult to monitor because adult females often nest on different beaches, unlike other sea turtles that usually return to the same beach year after year. Learn more about leatherback sea turtles from NOAA Fisheries research biologist Scott Benson in our latest On the Line podcast: http://1.usa.gov/1N2YHrr #leatherback #seaturtle #SeaTurtleWeek #hatchling #baby #NOAAFisheries Credit: Nicolas Pilcher, 2008 (Marine Research Foundation) Leatherback hatchling, Busama beach, Papua New Guinea
#TBT: Engineers at @CERN replace a piece of the #LargeHadronCollider’s 13,000-ton Compact Muon Solenoid (CMS) in 2014. Yesterday, the Energy Department’s Fermi National Accelerator Laboratory announced that the #LHC is back online and gathering data from the highest-energy particle collisions ever achieved on Earth! #Fermilab is the U.S. hub for the CMS experiment, which plays an important role in letting scientists observe these high-energy collisions, potentially yielding clues about how Nature behaves at a fundamental level. (Photo: CMS/CERN) #ThrowbackThursday #CERN #particleaccelerator #science #STEM #technology #physics
Today Senior Chief Chiquita, a US Coast Guard explosives detection canine from MSST LA/LB retired after nine years of service. Senior Chief Chiquita and MEC Ross conducted hundreds of operational missions supporting the U.S. Coast Guard's Ports, Waterways & Costal Security (PWCS) missions and responding to agency assist requests. Senior Chief and MEC spent the first several years of their career at MSST 91105. BZ to a job well done! #uscg #msst91105 #msst91103 #uscgk9
Maddie Stone - Gizmodo US［原文］