it depends on who the astronaut is like if it's someone that does think that it is. Like most people don't think so because its to far away from the sun. So it really depends
no
No. There are almost no astronomers that think Pluto is a planet. They know it's officially a dwarf planet.
No. It was categorised as a dwarf planet in 2006, but not all astronomers agree with that decision.
No. Most follow the new IAU definition of a planet which excludes Pluto.
the planet because Pluto the planet was there before all of us
Pluto was considered a planet until fairly recently. It has now been established as belonging to the kuiper belt, rather than our solar system - and thus has been 'downgraded' to a dwarf planet.
No, they are not. Pluto doesn't meet all of the requirements to be considered a planet.
First of all, Pluto is not a planet. It was considered a double planet because its largest moon Charon is half its size.
Pluto is too small to be considered a planet but since it has all other characteristics of a planet it is considered a dwarf planet .
Depends whether you include Pluto as a planet or not (I think it isn't at the moment - but it does seem to swap back and forth!). So, if you include Pluto, then it's Pluto. If you include all the dwarf planets (of which Pluto is one) - then its Eris. Otherwise, it's Neptune
No, mercury is. Pluto is a dwarf planet because it does not meet all the criteria to be a planet and it is the second largest dwarf planet so far.
All the planets after the asteroid belt besides Pluto. (Which scientists proved that Pluto is not a planet.)