The Oort Cloud


Sol

Recent Eclipses

An X-ray image of the sun taken with the Soft X-Ray Telescope on the orbiting Yohkoh satellite. Courtesy of Lockheed Palo Alto Research Laboratory. The Sun is the closest star to Earth and is the center of our solar system. The Sun, an active star fueled by nuclear fusion reactions, displays sunspots, solar flares, erupting prominences, and coronal mass ejections.

Diameter: 1.4 million km
Age: 4.5 billion years
Mass: 330,000 x Earth
Distance from Earth: 149.6 million km
Density: 1.41
Luminosity: 390 billion billion megawatts
Solar Cycle: 8 - 11 years
Temperature at surface: 5,500o C (9,932o F)
Temperature at Core: 14 milliono C (22.5 milliono F)
Temperature of Sunspots: 4,000o C (7,232o F)
Rotation Period at Equator: 25 Earth days
Rotation Period at Poles: 35 Earth days








Sol Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto

Oort Cloud