No, and it is doubtful they ever will. The environment on Venus is extremely hot, the atmosphere is extremely thick, and has acid in it. It is very difficult to even build robots that can stand up to it for more than seconds before they quit working.
No, not all astronomers consider Pluto a planet. Pluto was reclassified as a dwarf planet in 2006 by the International Astronomical Union, leading to debate among scientists about its classification. Some astronomers argue that Pluto does not meet all the criteria to be considered a full planet.
No.
That would be planet Earth. Our very own home planet.
sedna
Astronomers are constantly finding new planets orbiting stars other than our sun. In 2005 astronomers discovered a new object, later named Eris, which almost become the tenth planet. The discussion of this object resulted in a new definition of a planet which excluded Eris.
error
Astronomers have decided that Pluto does not meet the definition of a planet.
Astronomers think Pluto is a dwarf planet. And they're right.
pluto
No, not all astronomers consider Pluto a planet. Pluto was reclassified as a dwarf planet in 2006 by the International Astronomical Union, leading to debate among scientists about its classification. Some astronomers argue that Pluto does not meet all the criteria to be considered a full planet.
Venus was the first planet on which a space probe landed.
Me
No. There are almost no astronomers that think Pluto is a planet. They know it's officially a dwarf planet.
She never landed on a planet. She was on the space lab. Only one planet has been landed on by man and that is the moon.
The mariner spacecraft first landed on Mars 1971 I think.
Earth
The Mariner spacecraft landed on the planet Mars, and the Apollo spacecraft landed on the moon.