Possibly, comets brought water to Earth
To see exactly what is in the comet, it is necessary to analyse its substance with the help of different high sensitive devices, bringing samples to Earth. But aboard a small spacecraft such devices are difficult to place, because the size of the station Stardust 1,7×0,7×0,7 meters – about the same size as the Desk. How to take a sample of matter, flying from the comet’s nucleus at high speed? Space standards Stardust was moving slowly relative to the comet, about one and a half times slower than fly around the Earth artificial satellites. However, even this speed was several times greater than that of the bullet, the station flew over one second 6 km from the Contact of dust particles with the container of solid material at this speed (more than 20 thousand km/h) would have led to their strongest heating and evaporating. The only way to mildly catch and stop these dust particles, turned out to be a trap made of unique material – aerogel, which was established in 1931, but the big distribution has not received. Continue reading
NASA experts will soon do something that previously could only dream of and fantastic to shoot movies – get inside the comet. If all goes according to plan, tomorrow from the spaceport at Cape Canaveral launched the Deep Impact spacecraft, which will install a copper tube in the path of the comet Tempel 1. It is expected that celestial body will meet 372 kg heavy probe in a milestone for all Americans day – 4 July. After collision at a speed of 37 thousand km/h on the surface of the comet forms a crater the size of a ten-storey house.
The probe (it is a probe, not just RAM) immediately after the collision and the subsequent explosion will take samples of rocks that make up the nucleus of Tempel 1, and cameras mounted on the spacecraft, will take off the “dock” from beginning to end. All the information you plan to transmit it immediately to Deep Impact, located at a safe distance. “We will take the most powerful camera,” said astronomer Michael A’hearn, principal investigator of the project from the University of Michigan. For the clash will be the NASA orbital telescopes. In addition, the orbital meeting, which, according to forecasts, will remind fabulous fireworks will be visible using conventional ground-based telescopes. Continue reading
In the new year period in December 2015 on the horizon we can observe the double-tailed comet Catalina C/2013 US10 Catalina.
Information, data, interpretation of the significance of the comet Catalina.
Astronomical, cosmopolitisme and mythological content of the comet Catalina.
Comet C/2013 US10 Catalina.
Good news for all lovers of the starry sky — comet C/2013 US10 Catalina two weeks ago passed perihelion, the closest approach to the Sun, and now flies back to the depths of space. Until January 17, Catalina will approach closer and closer to the Ground, and in the first weeks of December, the sky in the middle latitudes it reaches the maximum sky brightness. This is a great chance to watch the comet live — even more so that the next time Catalina will be visible only after a few million years. Continue reading