sign up (free!)
Also on these boards
The ET (External Tank) is the largest element of the space shuttle, and when loaded, it is also the heaviest. It consists of three major components: the forward liquid oxygen (LOX) tank an unpressurized intertank that contains most of the electrical components the aft liquid hydrogen (LH2) tank; this is the largest part, but it is relatively light, due to hydrogen's very low density. Those 2 chemicals funnel out of the engine and when combined energy is released.
The image was captured on Nov. 27, 2012, and, according to NASA is one of the first views of Saturn’s sunlit North pole. Colors in the image were adjusted. The green indicates low high clouds, while the red coloring indicates high low clouds. The image was taken from roughly 261,000 miles away from the planet.
Star on a #Hubble diet. The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24. The intense ultraviolet radiation from the blazing stars heats the gas surrounding the cluster and creates a bubble in NGC 6357. The presence of these surrounding gas clouds makes probing into the region even harder.
This image of the Pinwheel Galaxy, also known as M101, combines data in the infrared, visible, ultraviolet and X-rays from four of NASA's space-based telescopes. This multi-spectral view shows that both young and old stars are evenly distributed along M101's tightly-wound spiral arms.
Marshall Porterfield, Life and Physical Sciences Division Director at NASA Headquarters, talks about the human body in microgravity and other life sciences at a NASA Social exploring science on the International Space Station at NASA Headquarters, Wednesday, Feb. 20, 2013 in Washington.