Heres the order of the planets starting nearest the sun and working outward through the solar system mercury venus earth mars jupiter saturn uranus neptune and planet nine solar . As many as 15 of them can have earth sized planets in the habitable zones on november 4 2013 astronomers reported based on kepler space mission data that there could be as many as 40 billion earth sized planets orbiting in the habitable zones of sun like stars and red dwarf stars within the milky way galaxy. A near earth object neo is any small solar system body whose orbit can bring it into proximity with earth by convention a solar system body is a neo if its closest approach to the sun is less than 13 astronomical units au. For earth and mars to be at their closest both planets needs to be on the same side of the sun mars needs to be at its closest distance from the sun perihelion and earth needs to be at its . Mars closest approach to earth since 2003 has given us especially detailed up close views of the red planet this recent image from nasas hubble space telescope shows mars and its ongoing dust
How it works:
1. Register a Free 1 month Trial Account.
2. Download as many books as you like ( Personal use )
3. No Commitment. Cancel anytime.
4. Join Over 100.000 Happy Readers.
5. That's it. What you waiting for? Sign Up and Get Your Books.