Looks like a nerd from an anime site just served all the scientists that are currently celebrating this occasion!
Just for the record, there's a big difference between landing a 380lb rover and a 2000lb one. You say Mars is the most explored next to Earth, but that still means virtually nothing, considering that it was only a few years ago that scientists even confirmed the presence of water underneath the planet's surface. Mars is also far more significant to us than distant planets, since we will actually have the
means to colonize it in our lifetimes.