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Like Betelgeuse and Antares, it is notable for its red color, which accounts for the fact that its image on this photograph is hardly more conspicuous than the images of stars which are actually much fainter but contain a larger proportion of blue light, to which the photographic plates here employed are more sensitive than to red or yellow. Aldebaran is about 50 light-years from the earth.
Their faces grew tense and drawn and their hearts turned sick as second followed second and minute followed minute and the needle still oscillated. Finally, however, it came to rest, and Seaton's voice almost failed him as he read his figures. "Two hundred and thirty-five light-years, Mart. They're lost, and still going.
This is Fenris, and on Fenris the sunsets, like many other things, are somewhat peculiar. Fenris is the second planet of a G star, six hundred and fifty light-years to the Galactic southwest of the Sol System. Everything else equal, it should have been pretty much Terra type; closer to a cooler primary and getting about the same amount of radiation. At least, that's what the book says.
If they're willing to throw some good money after bad, they can get it back, and a handsome profit to boot. And there ought to be planets above the rowboat and ox-cart level not too far away that could be raided for a lot of things we'd need." "That's right; I know of half a dozen within five hundred light-years. They won't be the kind Spasso and Valkanhayn are in the habit of raiding, though.
I gazed, with that first sudden shock of emotion, into the infinite depths of interplanetary space! Light years of distance. Gigantic worlds, blazing suns off there shrunken by distance now to little points of light. A universe was here! But this was an inch of golden quartz! Above my head were stars which, compared to my bodily size now, were vast worlds ten thousand light-years away!
Mike climbed out on the outside of the tug's hull, with the Chief also in space equipment, paying out Mike's safety-line. Mike leaped across two hundred yards of emptiness with light-years of gulf beneath him. His metal soles clanked on the Moonship's hull. Then the vision-screen on the tug lighted up. Lieutenant Commander Brown looked out of it, quietly grim. Joe flicked on his own transmitter.
"Obviously," said the king. "The idea being," Bors went on, "that if I can get enough food for the fleet so it can make a journey of several hundreds of light-years " "It is necessary to go a long way," the king confirmed unhappily. "We need to take the fleet to where Mekin is only a name and Kandar not even that." "Where you will disband the fleet " "Yes."
The stuff was all at least twenty days behind date, and not uniformly so, which accounted for much of the jiggling. It had been transmitted from Planetary Proconsulate to Prefecture, and from Prefecture to Viceroyalty, and from there to Odin, all by ship. A ship on hyperdrive could log light-years an hour, but radio waves still had to travel 186,000 mps.
Granting that, in the general average, each star is as bright as the sun, and that their thickness is such that within a sphere of 3300 light-years there are 1,000,000,000 stars, if we inquire how far out such a system must be continued in order that the sky shall shine with even four per cent of the light of the sun, we shall find the distance of its boundary so great that millions of millions of years would be required for the light of the outer stars to reach the centre of the system.
To put the result of measures of parallax into another form, let us suppose, described around our sun as a centre, a system of concentric spheres each of whose surfaces is at the distance of six light-years outside the sphere next within it. The inner is at the distance of six light-years around the sun.
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