Accoring to a research made by an international team of scientists Mars small size might be the result of Jupiter moving towards the Sun while it was forming, which might have absorbed part of the matter present in the orbit of what then coalesced into the red planet.
Astronomy / Astrophysics
Andrei Dmitrievich Sakharov was born on May 21, 1921 in Moscow, then in the USSR. He took part to Soviet nuclear program and seeing the weapons power helped him to develop his activism against atomic proliferation. In 1975 he was awarded a Nobel Peace Prize.
A new analysis of the data gathered by the Galileo space probe has revealed the presence of a partially molten magma ocean which is a layer about 30 miles thick below the surface of Io, one of the biggest Jupiter’s moons.
The Gravity Probe B space mission has confirmed two predictions derived from Albert Einstein’s theory of general relativity measuring the geodetic and frame-dragging effects.
In July 2005 the Deep Impact probe made the first visit to the comet Tempel 1, in recent days the Stardust spacecraft has taken new photos, including the ones of the crater left by the impactor launched from Deep Impact, and made new measurements to improve our knowledge.