Answer:
Goldilocks scenario suggests that
Explanation:
- It's considered to the habitable zone around the stars were the temperature is just optimal for the existence of the life to develop. They are the part of the system that is nor too hot nor too cold for the survival and germination of bacteria that needs liquid moisture to grow.
Here's what I think:
The phases are caused by the Earth's shadow (lit from behind by the sun) casting a piece of the moon into shadow. But because the moon orbits the earth those phases are only experienced the same way on one fixed part of the earth's surface. It's is the earth's changing orbit in space which really makes it seem as though the moon cycles through phases from a fixed position on earth. In other words, on the moon, in an earth day, you would actually cycle through all of the phases. Assuming you were on the earth-facing side, you would experience a strange type of day with the blocked out sun rising and setting behind either the earth or the moon twice a day. You would thus have two 'days' and two 'nights' in an earth day. On the 'dark side' of the moon, you would experience full day all of the time and no phases at all.
But I could be wrong.
Dutch, this is because they are both different but similar at the same time
Answer: 100Mpc
Explanation:
Hubble deduced that the farther the galaxy is, the more redshifted it is in its spectrum, and noted that all galaxies are "moving away from each other with a speed that increases with distance", and enunciated the now called Hubble–Lemaître Law.
This is mathematically expressed as:
(1)
Where:
is the approximate recession velocity of the galaxy
is the Hubble constant
is the distance
Now, we have two galaxies A and B ande we know the following:
Galaxy A has a velocity twice that of galaxy B
(2)
Galaxy A is 200 Mpc away
(3)
According to Hubble Law:
(4)
(5)
Substituting (2) in (5):
(6)
(7)
(8)
If 
(9)
(10)
Substituting (8) in (11):
(11)
Finally:
