Posts tagged ‘solar system’
by Milky Way Maid, from news reports
According to a new report from a senior propulsion scientist at Orbital Technologies Corp., Mars’ redness may be linked to a nuclear past. In a story that has been picked up by AOL news service, this hypothesis is supported by the presence of radioactive materials still found on the planet surface.
“A natural nuclear reaction could have occurred on our own planet — and could happen again, said Dr. John Brandenburg, a senior propulsion scientist at Orbital Technologies Corp.
‘ “The Martian surface is covered with a thin layer of radioactive substances including uranium, thorium and radioactive potassium — and this pattern radiates from a hot spot [on Mars],” Brandenburg told FoxNews.com.”
Very interesting article. Let’s hope that funding is successfully sought for a mission to Mars to verify this hypothesis. Article may be read at:
A new app for your iPad will put the planets at your fingertips. The app, unimaginatively dubbed ‘Solar System’, It’s actually an electronic book written by former radio astronomer Marcus Chown. You can touch pictures of a planet, or Saturn’s rings, for example, to find out more about it. The review in WSJ says the articles are well-written, the galleries have dozens of high-resolution images, plus animated sequences. Basic data is of course included (diameter, mass, volume, gravity, atmosphere). Priced at $13.99, it is more expensive than a lot of apps, but it manages to combine info with beauty.
Moon Takes 100 Hits from Meteoroids
MIT Working on 3-D “Super RoadMap” to the Solar System
The solar system now is thought to be composed of three zones instead of two, according to NASA’s Dr. Alan Stern at a recent meeting.
The four rocky planets (Mercury, Venus, Earth, Mars) make up the inner zone. The gas giants (Jupiter, Saturn, Uranus, Neptune) form a “middle solar system.” Beyond them lies an enormous third zone composed of the Kuiper Belt and the Oort Cloud, both named for the astronomers who predicted their existence.