Search results
Results from the WOW.Com Content Network
The radiative zone is the thickest layer of the Sun, at 0.45 solar radii. From the core out to about 0.7 solar radii, thermal radiation is the primary means of energy transfer. [74] The temperature drops from approximately 7 million to 2 million kelvins with increasing distance from the core. [62]
[37] [38] During the same interval, the odds that Earth will be scattered out of the Solar System by a passing star are on the order of 1 in 100,000 (0.001%). In such a scenario, the oceans would freeze solid within several million years, leaving only a few pockets of liquid water about 14 km (9 mi) underground.
Sunburn is a form of radiation burn that affects living tissue, such as skin, that results from an overexposure to ultraviolet (UV) radiation, usually from the Sun. Common symptoms in humans and other animals include red or reddish skin that is hot to the touch or painful , general fatigue , and mild dizziness .
NASA's Parker Solar Probe is about to make its closest approach to the sun. The spacecraft will fly within 3.8 million miles of the solar surface. The spacecraft is collecting essential data that ...
A some time in the very distant future, won't the Sun burn out, shrink (possibly after initially expanding) and cool down? Perhaps it would be possible to walk on it then, although by that time humans will either be extinct or have elvolved into something else I imagine. 81.104.12.7 23:42, 6 December 2006 (UTC)
Sunburn effect (as measured by the UV index) is the product of the sunlight power spectrum (radiation intensity) and the erythemal action spectrum (skin sensitivity) across the range of UV wavelengths. [9] [10] The UV index is a number linearly related to the intensity of sunburn-producing UV radiation at a given point on the Earth's surface.
Long days in the sun mean higher chances of getting a sunburn. Read on for 11 expert tips on how to treat a redness and discomfort from sunburn safely.
The amount of heat energy received at any location on the globe is a direct effect of Sun angle on climate, as the angle at which sunlight strikes Earth varies by location, time of day, and season due to Earth's orbit around the Sun and Earth's rotation around its tilted axis.