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 ...

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 ...

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 ...

How to see a scintillating Sirius Any star that has three or more times as much mass as the sun will tend to look blue to our eyes. That's irrespective of other factors such as chemical ...

It’s really easy to find. Sirius is an important star. Just 8.6 light-years from the solar system, it’s part of the fifth closest stellar system to the Sun. A blue-white main sequence star ...

That’s because it was thought that the presence of Sirius in the daytime sky close to the Sun intensified the heat of the day. That’s not how it works at all, but the name stuck.

According to NASA, it is over 20 times brighter than our sun and twice as massive, though it might not appear that way to the naked eye. The Dog Star is another name for Sirius, as it is part of ...

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 ...

“For the sun to appear as dim as Sirius, the brightest object in our night sky, it would need to be moved 1.7 light years away” Sirius has a luminosity 25.4 times greater than the ...

To the Greeks and Romans, the “dog days” occurred around the time Sirius appears to rise alongside the sun, in late July in the Northern Hemisphere. They believed the heat from the two stars ...