Read article: World’s most expensive sundial
The aluminium sundial features rings representing the orbits of Mars and Earth, and red and blue dots showing the position of the two planets at the time of the landing. Once safely installed on Mars,...
Upsilon Andromedae is a yellow G-type star similar to the Sun. In 1996 Geoffrey Marcy from San Francisco State University, together with Butler, discovered one planet by observing a ‘wobble̵...
Murray and Holman ran numerical simulations of the planets positions over a 200 million year period using their new technique. They discovered that although the outer planets appear in stable orbits, ...
Some asteroids are pulled into near-Earth orbits by gravitational resonance effects created by the combined pulls of Mars, Jupiter and Saturn. However, it has been known for many years that another me...
Mars is now a dry planet with most of its water either tied up in a deep permafrost or lost to outer space. However, images gathered by Mars Observer and earlier space craft such as the Viking orbiter...
Geologists have known for some time that ice sheets existed at the equator between 2, 400 and 2, 200 million years ago and then again between 820 and 550 million years ago. Their favourite theory to e...
Planetary physicists hope to use atmospheric data from Titan to provide clues to the behaviour of our own atmosphere. The difficulty with studying Earth’s atmosphere is that it is affected by ex...
Greaves and colleagues used the SCUBA instrument on the James Clerk Maxwell Telescope in Hawaii to look at the dust around Epsilon Eridani. SCUBA operates at submillimetre wavelengths, where the glare...
The researchers constructed a mathematical representation of the irregularly spaced near Earth asteroid Castalia for their calculations. They assumed it would be made of solid rock, a pair of solid ro...
Terebey and colleagues believe that the new planet was in orbit around two stars – TMR-1A and -1B – before it was ejected by a gravitational slingshot mechanism. The planet then created a ...
