"At any rate, here we go. When we get there, you can get out and try it."

Again came the shock of the start. The heavens seemed to reel about them; the bright spot of Sirius was a brilliant violet point that swelled like an expanding balloon, spreading out until it filled a large angle.

Then again the heavens reeled, and they were still. The control room was filled with a dazzling splendor of brilliant blue-white light, and an intense heat beat in upon them.

"Brother! Feel that heat," said Arcot in awe. "We'd better watch ourselves; that thing is giving off plenty of ultraviolet. We could end up with third-degree sunburns if we're not careful." Suddenly he stopped and looked around in surprise. "Hey! Morey! I thought you said this was a double star! Look over there! That's no white dwarf—it's a planet!"

"Ridiculous!" snapped Morey. "It's impossible for a planet to be in equilibrium about a double star! But—" He paused, bewildered. "But it is a planet! But—but it can't be! We've made too many measurements on this star to make it possible!"

"I don't give a hang whether it can or not," Wade said coolly, "the fact remains that it is. Looks as if that shoots a whole flock of holes in that bedtime story you were telling us about a superdense star."

"I make a motion we look more closely first," said Fuller, quite logically.

But at first the telectroscope only served to confuse them more. It was most certainly a planet, and they had a strange, vague feeling of having seen it before.

Arcot mentioned this, and Wade launched into a long, pedantic discussion of how the left and right hemispheres of the brain get out of step at times, causing a sensation of having seen a thing before when it was impossible to have seen it previously.

Arcot gave Wade a long, withering stare and then pushed himself into the library without saying a word. A moment later, he was back with a large volume entitled: "The Astronomy of the Nigran Invasion," by D. K. Harkness. He opened the volume to a full-page photograph of the third planet of the Black Star as taken from a space cruiser circling the planet. Silently, he pointed to it and to the image swimming on the screen of the telectroscope.