The white dwarf orbiting Sirius began its life as a blue star with 5 times the Sun’s mass, say astronomers in Arizona and New Mexico. If this blue star still shone today, Sirius would be so ...

After the sun has set, a new suite of shining beacons ... “You get a yellow Sirius, deep red Sirius, blue Sirius—and it all happens in a fraction of a second. It’s a kaleidoscope of colors.” ...

Only the sun, the moon ... frosty nights and snow-laden fir trees." In color, Sirius is a brilliant white with a definite tinge of blue. Its name appears to be derived directly from the Greek ...

Another thing that makes Sirius stand out is its color: brilliant white but also shining with a definite tinge of blue. For those of ... when the sun is 12 degrees below the horizon and the ...

The brightest star in our sky has a companion that's smallerthan Earth yet 98 percent as massive as the Sun, a new study reveals. Astronomers already knew the brilliant blue-white Sirius hada ...

That sun/Sirius pairing, they believed, always delivered the hottest days each mid- to late summer. The ancients were on to something. Typically, the highest temps of the year happen after the sky ...