Résultats de recherche
Il y a 1 jour · Earth is the third planet from the Sun and the fifth largest planet in the solar system in terms of size and mass. Its near-surface environments are the only places in the universe known to harbour life.
- Planetary Differentiation
Earth - Differentiation, Formation, Structure: Once hot,...
- The Outer Shell
Earth - Core, Crust, Mantle: Earth’s outermost, rigid, rocky...
- Accretion of the Early Earth
The concentrations of isotopes that decay radioactively and...
- Basic Planetary Data
Earth - Planet, Atmosphere, Geology: The mean distance of...
- Structure, Composition, Development
Earth - Structure, Composition, Development: The origin of...
- The Atmosphere
Because Earth has a weak gravitational field (by virtue of...
- The Interior
Earth - Core, Mantle, Crust: More than 90 percent of Earth’s...
- Impacts, Planetesimals, Craters
Earth - Impacts, Planetesimals, Craters: During its...
- Planetary Differentiation
Il y a 1 jour · The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
Il y a 5 jours · Jupiter, the most massive planet of the solar system and the fifth in distance from the Sun. It is one of the brightest objects in the night sky; only the Moon, Venus, and sometimes Mars are more brilliant. Jupiter is designated by the symbol ♃.
Il y a 4 jours · Uranus, seventh planet in distance from the Sun and the least massive of the solar system’s four giant, or Jovian, planets, which also include Jupiter, Saturn, and Neptune. At its brightest, Uranus is just visible to the unaided eye as a blue-green point of light. It is designated by the symbol ♅.
Il y a 3 jours · The Philadelphia Orchestra explores our solar system in Holst’s legendary and popular work The Planets in a program that also includes Copland’s American masterpiece Appalachian Spring Suite, led by Marin Alsop.
Il y a 4 jours · Our planet whirls around the sun in an ellipse, rather than a circle. On Friday the planet reached its farthest point from its star, known as aphelion.
Il y a 1 jour · Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. Explanation: A glow from the summit of Mount Etna , famous active stratovolcano of planet Earth, stands out along the horizon in this mountain and night skyscape.
