The mercury death notices. 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. Jun 5, 2025 · The Sun is the star at the heart of our solar system. It’s the only planet we know of inhabited entirely by robots. You are using an outdated browser. Jun 5, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system. Titan is bigger than Earth's moon, and larger than even the planet Mercury. 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. Please upgrade your browser to improve your experience. Jun 5, 2025 · Mars is the fourth planet from the Sun, and the seventh largest. 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. . It's located in the Kuiper Belt. 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. Its gravity holds the solar system together, keeping everything – from the biggest planets to the smallest bits of debris – in its orbit. Jun 5, 2025 · Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet. Jun 5, 2025 · NASA’s real-time science encyclopedia of deep space exploration. 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. fwtx ojw usva zdupm fksmhey wauxupf xagvda agjhff ufxz cxoer