Only Mercury (Pluto also was in there, but it's now a "minor planet).
Mercury. Its surface is covered with impact craters similar to those on Earth's moon. Its diameter is approximately 4879 km while Earth's is ~12,742 km
Mars is about half the size of Earth in terms of diameter.
Mars' diameter is about half that of the Earth and it's mass is only 10% of the Earth's.The total surface area of Mars is about the same as the total land area of the Earth.
Mars has an average diameter of about 6,779 kilometers (4,212 miles), making it roughly half the size of Earth.
The smallest planet in our Solar System is Mercury. The second-smallest is Mars, which has MORE than half of Earth's diameter.
The smallest planet in our Solar System is Mercury. The second-smallest is Mars, which has MORE than half of Earth's diameter.
Mars, with a diameter 0.53226 times that of the Earth.
Mercury. It has a diameter of around 4880km, while Earths diameter is 12104 km on average.
Only Mercury (Pluto also was in there, but it's now a "minor planet).
The diameter of the Earth is 12742 km or about 8000 miles.
Dwarf planet Pluto has the moon Charon which is almost half its diameter (2390 km and 1205 km), but Pluto is no longer a planet... The next one is the Earth with the Moon having a diameter 0.273 times the Earth's.
Mercury is the smallest planet, so there isn't one with half the diameter.
Mercury
Mars is about 6780 kilometers (4240 miles) in diameter, a little more than half the diameter of Earth.
The length of a radius is half the length of a diameter.
Mercury. Its surface is covered with impact craters similar to those on Earth's moon. Its diameter is approximately 4879 km while Earth's is ~12,742 km