Without space probes, the only knowledge we have of the solar system comes from ground-based telescopes. That's how we did it for 300 years before satellites.
we have 9 planets to my knowledge. including pluto
Since the 2006 reclassification of Pluto to a Dwarf Planet, there are now eight planets in our solar system.
In our solar system, Mercury and Venus are the two planets which do not have moons.
there are 5 planets in the solar system which have moon and the planets are earth, mars,jupiter,saturn,and uranus
no you cant!
'Mercury' and 'Venus' is. Those are the only planets in our solar system without moons.
Mercury and Venus. They are the only planets without a moon.
Yes, there are 2 billion planets around our solar system and many of them can host different species of life forms beyond our knowledge or understanding.
Seven of the eight planets in out solar system have atmospheres. Mercury is the only planet without one.
There are eight major planets, ten dwarf planets (sometimes called "plutoids"), and two protoplanets known to be in the solar system. Bear in mind, however, that, as we are always expanding the horizons of our knowledge the numbers quite possibly will change. For a list of major objects (such as planets and plutoids) in the solar system, see related links.
Ancient astrologers only knew about 5 planets plus Earth. They knew about the 5 planets from visual observation.Furthermore, there are only 8 planets in our solar system.
You have both an involuntary and a voluntary muscular system.