Word: diameterically
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Put forward by Channel Tunnel Group/France Manche, a British-French consortium, the rail-tunnel plan was one of four options submitted to the two governments last October by competing groups. The winning proposal envisages two tubes, each 24 ft. in diameter, through which trains will shuttle passengers and vehicles between...
Also found were two cone-shaped objects described as "about 10 feet" in diameter. One had an attached parachute, indicating it came from one of the solid rocket boosters blown up. Each booster is 12 feet in diameter and contains four parachutes designed to lower the spent rockets to the...
The Oort Cloud, explains Berkeley's Spinrad, would consist of at least a trillion "dull blocks of ice," ranging from a few inches to a few miles in diameter. Out in that velvet blackness of space, where temperatures approach absolute zero, the snowballs remain unchanged, well beyond the effects of...
When a comet is still as far away as 5 AU from the sun, about the distance of Jupiter, its most volatile material begins forming a coma that reflects light. By the time the most powerful telescopes first catch a glimpse of a comet, the coma already obscures the nucleus...
One of the most important contributions from the Vega program will be what is called the Pathfinder concept. Together the probes will attempt to reckon the position and orbit of Halley's nucleus with a precision impossible from ground-based observations and then beam the data back to the Soviet...