Mercury is the sole planet in our Solar System without any moons due to its small size and weak gravity; too small for supporting one, plus closeness to the Sun makes survival of such bodies impossible. Its egg-shaped orbit lasts 88 Earth days and it may approach as close as 29 million miles to the […]
People have long been afraid that seeing a red Moon signals the start of an imminent catastrophe, yet this phenomenon simply results from passing through Earth’s umbra (shadow). Umbral light passes through Earth’s gaseous atmosphere and is scattered in green and violet wavelengths that combine into coppery red hues, giving an overall coppery red tint.
NASA’s Cassini spacecraft has returned an abundance of data about Saturn and its moons, which is revolutionizing our understanding of this fascinating planet. Since 2005, Cassini has conducted an in-depth investigation of Saturn and its rings and moons, uncovering mysteries but leaving others for future scientists to solve. On September 3, it will conclude its
Our solar system is a collection of planets and other space material orbiting a star, the Sun. The Sun is the centre of the system, and planetary objects in the order Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto form its outer rim. The four inner planets, Mercury, Venus, Earth and Mars are
The Solar System was formed 4.6 billion years ago by the gravitational collapse of an interstellar molecular cloud. It contains the Sun and its eight planets and their moons, plus a belt of icy dwarf planets and many asteroids. At the outer edge of our solar system, beyond the Kuiper belt, is the Oort cloud,
The solar system consists of the Sun and the planets, natural satellites, asteroids, meteoroids and comets that orbit it. These objects range in size from microscopic dust to the largest planets. They all have certain characteristics that scientists use to classify them. These include size, temperature and composition. Planets In our solar system, a planet
The Sun, the eight planets and their moons, and countless asteroids, comets, and other small, icy objects comprise our Solar System. The Solar System formed 4.5 billion years ago from leftover materials from the collapse of a cloud of interstellar material. The four inner planets, Mercury, Venus, Earth and Mars, were rocky, but the outer
Our Solar System is a collection of planets, moons and dwarf planets that orbit the Sun. The planets range in size from the rocky Earth to the gaseous Jupiter. The Solar System also contains a large number of comets, asteroids and other small objects that fall into the system from outer space. Many of these
Galaxies are large collections of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. They range in size from dwarf galaxies with a few million stars to supergiants with one hundred trillion stars. The Solar System orbits around the Sun in our Milky Way galaxy. It contains planets, moons, and asteroids.