... Surface gravity limits the size of mountains - it turns out that the Himalayas on Earth are about as high as it is possible to get without the rocks beneath them liquefying under the pressure (ie. 9km). ...
... Early in the course, I took about 30 minutes out of a lecture to present the ... Zog is remarkably similar to the Earth in every way. ... Just as earthly astronomers did, you will have to make some new observations to ...
... A spherical meteorite of radius 3m enters the Earth's atmosphere at an altitude of 100km and a speed (relative to the Earth) of 30 km/s. The atmosphere slows it down, so when it hits the Earth's surface it is travelling at only 1 km/s. If half of the heat ...
... 2005 Jan 16) Near Earth Comet 162P/Siding Spring . (2004 Apr) 2004 CB identified as a comet . ... Previous News Items . Anglo-Australian Near Earth Asteroid Survey 1990-96 . Links .. ...
... Photo info . Navigator . John Burr with an early photoelectric photometer, early 1950s. ... View full size . Title: John Burr with an early photoelectric photometer, early 1950s . File name: 30in1950s.jpg . ...