Answer:
Rank of the stars from shortest to longest distances:
Barnard's Star (M4)
61 Cygnia A (K5)
Alpha Centauri A (G2)
Sirius (A1)
Spica (B1)
Explanation:
The habitable zone, also known as the circumstellar habitable zone, is the range of distances from a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets.
The location of a star’s habitable zone is dependent upon its luminosity, which is the amount of light emitted by an object in a unit of time, because a star’s luminosity increases with time; and also the star's mass.
The inverse square law of light brightness can be used to determine the extent of the habitable zones for different luminosity stars with the formula:
star boundary = Sun boundary × squareroot[(star luminosity)/(Sun luminosity].
I pretty sure the answer is false
Answer:
All of them, except for D
Explanation: hope it helps;)
Answer:
Full Moon
Explanation:
Full Moon does not have a fix or defined date , like some other celestial bodies .
But the rest options , i.e. , Vernal equinox occurs at March 21 every year , similarly ,
Autumnal equinox - September 22 every year
and
Summer solstice - June 21 every year ,
<u>hence , the correct answer to statement given in the question is Full Moon .</u>
