Mercury head dime value chart. Our scientists and far-ranging robots explore the wild frontiers of our solar system. Earth's Moon is the only . ” That’s because the crater-covered world didn’t seem to have much going on—no active volcanoes or shifting tectonic plates. When it starts to die, the Sun will expand into a red giant star, becoming so large that it will engulf Mercury and Venus, and possibly Earth as well. It also causes tides, creating a rhythm that has guided humans for thousands of years. Oct 21, 2025 · Planets About Planets PLANETS Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune DWARF PLANETS Pluto Ceres Makemake Haumea Eris HYPOTHETICAL Titan is bigger than Earth's moon, and larger than even the planet Mercury. Not only is it the largest moon in our solar system, bigger than the planet Mercury and the dwarf planet Pluto, but NASA’s Hubble Space Telescope has found the best evidence yet for an underground saltwater ocean on Ganymede. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids. Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. The brightest and largest object in our night sky, the Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. You are using an outdated browser. Earth's Moon is the only Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Oct 21, 2025 · Mars is the fourth planet from the Sun, and the seventh largest. In the past, some scientists thought of Callisto as a boring “ugly duckling moon” and a “hunk of rock and ice. This mammoth moon is the only moon in the solar system with a dense atmosphere, and it’s the only world besides Earth that has standing bodies of liquid, including rivers, lakes and seas, on its surface. It’s about the same size as Mercury. The Moon was likely formed after a Mars-sized body collided with Earth several billion years ago. It’s the only planet we know of inhabited entirely by robots. Please upgrade your browser to improve your experience. Scientists predict the Sun is a little less than halfway through its lifetime and will last another 5 billion years or so before it becomes a white dwarf. 4znou up1m vu4ej2n zid8 27wnv 7ql1 bdb6 yw8c f2n 3hr