The thermosphere is the first layer of the atmosphere where there are enough heavier molecules (oxygen) to absorb a significant anount of the Sun's radiation. Below the thermosphere, much of the heat is dissipated by convective currents.
Although technically "hot", the gas in the thermosphere is so thin that it can pass little heat to other molecules, and loss of heat by radiation would still cool objects in this part of the atmosphere.
the sun's radiation strikes it first
When a star explodes, it is referred to as a nova. If the star is large enough, it will create a super nova. And if the star is dense enough, it does not explode, but instead collapses on itself and forms a black hole
The Milky Way is a galaxy.
The Big Bang Theory
cosmic microwave background radiation.
Irregular Galaxy contains mostly young stars
Temperature is the measure of average kinetic energy of all the atoms and molecules in an object
The Doppler effect.
The Doppler effect.
The Doppler effect.
The Doppler effect.
That may be the asteroids.
Terrestrial means on Earth so Earth is the only terrestrial planet
This is incorrect, the first 4 planets are terrestrial as they are solidly bound planets. Pluto was also a terrestrial dwarf planet. Any planet can have moons but due to the gas giants having larger gravitational forces they have traditionally gathered more moons. Thusly, no.
As far as we know, Mars is the planet that is the most similar to the earth.
full moon