Pluto has been designated a planet in our solar system for years (ever since it was discovered in the last century), but in 2006 it was demoted. What caused this decision? And is there a …

Oct 25, 2020 · Pluto was considered to be a planet because it was a relatively large body orbiting the sun - unlike Callisto, which was orbiting another planet. However, in 2006, Pluto was …

A dwarf planet is a minor planet that is round, so it does not dominate its orbit like a real planets do. If an object is more massive than other objects near its orbit and it is gravitationally …

The response of the BAJ and others was to demote Ceres, Pallas, Juno, and Vesta from planethood status to some lesser status, either minor planet or asteroid. Astronomers didn't …

Jul 29, 2014 · Why does Pluto's orbit cross Neptune's orbit? Is this a fault in Newton's law of gravitation?

Dec 11, 2011 · How many planetoids have been discovered that are, say, 50% the size of Pluto or larger? Where are they? Incidentally, what is the difference between a planet, a planetoid, and …

Nov 18, 2018 · The time dilation in Interstellar was caused by the planet being extremely close to a black hole (the planet's own gravity would likely not have contributed very much to this …

Dec 12, 2011 · I know it roughly takes 20 minutes from Earth to Mars, and 8 minutes from the Sun to Earth, but don't know how long for the other planets on my list.

Sep 18, 2015 · Recent pictures from the New Horizons spacecraft, shown below, seem to indicate that, at Pluto's distance, we are entering a twilight zone, with a distinct lack of colors, although …

Oct 27, 2017 · 26 In about 5 billion years, when our Sun expands into a red giant making our planet uninhabitable, where will the new Goldilocks zone be? Could life form on a new planet …