|| Home. | Universe Galaxies And Stars Archives. | |
|| Universe | Big Bang | Galaxies | Stars | Solar System | Planets | Hubble Telescope | NASA | Search Engine ||
Lunar dust is similar to silica dust.
One of the big hazards for astronauts living on the Moon is going to be the dust; it gets everywhere, and is very dangerous to breathe. Lunar dust is similar to silica dust on Earth, which can cause silicosis, a disease that damages the lungs. Martian dust could be even more dangerous because it is a strong oxidizer - it could actually burn your skin if it touched. Future missions will need to control lunar and martian dust from getting inside spacecraft and habitats, and NASA is working on potential solutions.
New observations from the Solar and Heliospheric Observatory (SOHO) has helped solar Astronomers trace the source of the Sun's solar wind. The solar wind is a constant stream of protons, alpha particles, heavy ions and electrons flowing from the Sun. The solar wind had been seen streaming from various regions on the Sun, but scientists have now been able to work out the structure of funnel-shaped magnetic fields that carry material from below the surface of the Sun, and eject it into space.
This image shows nebula N214, a large region of dust and gas located in the neighbouring Large Magellanic Cloud galaxy. The image was taken using the European Southern Observatory's 3.5m New Technology telescope (NTT) located at La Silla in Chile. The central, brightest spot in the nebula isn't a star, but a cluster of stars that add up to about 80 solar masses. The large blob of gas at the top of the nebula probably contains a massive star, probably 40 times our Sun, which is putting out 200,000 times as much energy.
The European Space Agency's Mars Express spacecraft took this unusual photograph of the Aureum Chaos region on Mars. It's located at the eastern part of the Valles Marineris, near a large impact crater called Aram Chaos. The history of this region is very complex. It was probably filled with sediment and then large areas collapsed due to the removal of ice, water or magma; various flat-topped mesas remained.
Go To Print Article
Universe - Galaxies and Stars: Links and Contacts
|| GNU License | Contact | Copyright | WebMaster | Terms | Disclaimer | Top Of Page. ||