Is that a spaceship or a cloud? Although it may seem like an alien mothership, it's actually a impressive thunderstorm cloud called a supercell. Such colossal storm systems center on mesocyclones -- rotating updrafts that can span several kilometers and deliver torrential rain and high winds including tornadoes. Jagged sculptured clouds adorn the supercell's edge, while wind swept dust and rain dominate the center.
A tree waits patiently in the foreground. The above supercell cloud was photo [...]
Three decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. The titanic supernova, called Supernova 1987A (SN 1987A), blazed with the power of 100 million suns for several months following its discovery on Feb. 23, 1987.
Since that first sighting, SN 1987A has continued to fascinate astronomers with its spectacular light show. Located in the nearby Large Magellanic Cloud, it is the nearest supernova explosion observed in hundreds of years and the best o [...]
For 360 degrees, a view along the plane of the ecliptic is captured in this remarkable panorama, with seven planets in a starry sky. The mosaic was constructed using images taken during January 24-26, from Nacpan Beach, El Nido in Palawan, Philippines. It covers the eastern horizon (left) in dark early morning hours and the western horizon in evening skies. While the ecliptic runs along the middle traced by a faint band of zodiacal light, the Milky Way also cuts at angles through the frame.
Today’s arrival of the Progress 66 cargo craft, just 24 hours after the capture ofthe Space X Dragon, makes four spaceships at the International Space Station.
Traveling about 250 miles over the south Pacific, the unpiloted Progress 66 Russian cargo ship docked at 3:30 a.m. EST to the Pirs Docking Compartment of the International Space Station. [...]
Far beyond the local group of galaxies lies NGC 3621, some 22 million light-years away. Found in the multi-headed southern constellation Hydra, the winding spiral arms of this gorgeous island universe are loaded with luminous blue star clusters, pinkish starforming regions, and dark dust lanes. Still, for astronomers NGC 3621 has not been just another pretty face-on spiral galaxy.
Some of its brighter stars have been used as standard candles to establish important estimates of extragalactic [...]
The SpaceX Dragon cargo spacecraft was berthed to the Harmony module of the International Space Station at 8:12 a.m. EST. The hatch between the newly arrived spacecraft and the Harmony module of the space station is scheduled to be opened this afternoon. The capsule will spend about four weeks attached to the station.
With Dragon now berthed to station, the Expedition 50 crew will focus on its next cargo delivery, which is scheduled to arrive in less than 24 hours. The Russian Progress 66 was [...]