Many stars in our galaxy exist in pairs. Now scientists are finding clues that our Sun may once have had a companion of its ...

Helioseismology probes the sun's interior by analyzing the waves that travel through it, while spectroscopy reveals the ...

or "spectra," can reveal its composition and the ratio of elements it contains. "We found that J0524-0336 contains 100,000 times more lithium than the sun does at its current age," team leader and ...

102 x 120 cm. (40.2 x 47.2 in.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...