... The solar system probably formed about 4.5 billion years ago from a giant disk of gas, dust and ice in space. ... Planet formation began with the grains of dust and ice colliding and sticking together to form larger objects. ...
... The solar system probably formed about 4.5 billion years ago from a giant disk of gas, dust and ice in space. ... Planet formation began with the grains of dust and ice colliding and sticking together to form larger objects. ...
... In this context "dust trail theory" refers to the fact that the set of meteoroids released from a parent comet during a single perihelion return stretch out into a dense, narrow dust trail during their early orbital evolution. ...
... Sun in the opposite direction to the Earth, so when the Earth crosses the trail of debris, which is composed of a number of dense, discrete streams of dust particles, the dust grains enter the atmosphere at very high speeds, about 160,000 miles per hour ...
... the Sun in the opposite direction to the Earth, so when the Earth crosses the trail of debris, which is composed of a number of dense, discrete streams of dust particles, the dust grains enter the atmosphere at very high speeds, about 45 miles per second ...
... dust), (ii) the Sun (the dynamic solar atmosphere, chromosphere and corona), (iii) Solar System Astronomy (including celestial mechanics, planetary science, and the dynamical evolution and interrelationships of comets, asteroids and interplanetary dust ...
... fading is caused by the formation of sooty dust clouds above the surface of the star ... all RCB stars pulsate, which may help to explain the dust formation episodes ... regarding their evolutionary origin and the physical mechanism of dust formation ...
... predictions involve the accurate modelling of dust trails within the Leonid stream ... are some 2009 Leonid results we calculated with dust trail theory, i.e. following ... 2002 . "Leonid dust trail structure and predictions for 2002" . ...
... In this context "dust trail theory" refers to the fact that the set of meteoroids released from a parent comet during a single perihelion return stretch out into a dense, narrow dust trail during their early orbital evolution. ...