career in astronomy
by: Brett R.
4 questions
1.are there any other Earth like planets out there? yes, scientists have discovered a planet in the habitable zone of a star that could contain liquid water on it about 500 light years away.
2. how close are we to light speed space crafts? there is something could a solar sail that can travel one tenth the speed of light.
3.could we colonize Mars? yes, we could put greenhouse gases on it to melt the ice,then plant trees to oxygenate it.
4.could we colonize the moon? yes, we could build in interplanetary shield then melt the ice then make air to put on it then plant trees
There are 100,000,000 Earth (one hundred million) like planets in the milky way alone, but 50,000,000,000,000,000,000,000 (fifty heptillion) in the entire universe