The ultraviolet rays were able to be lessened by the technological breakthrough in recent years by the worlds top scientists. 10 people found this helpful. Because I forgot to apply sunscreen before going outside for the company picnic on a sunny afternoon, the sun's ultraviolet rays gave me an unpleasant sunburn. 6 people found this helpful. You need to protect your eyes from any ultraviolet rays by wearing special sunglasses if you will be exposed to them.
Mars' thin atmosphere and its greater distance from the sun mean that Mars is much colder than Earth The average temperature is about minus 80 degrees F (minus 60 degrees C), although it can vary from minus 195 degrees F (minus 125 degrees C) near the poles during the winter to as much as a comfortable 70 degrees F (20 degrees C) at midday near the ...
In the past, Mars may have been warmer and wetter, with an average global temperature of 50 degrees F (10 degrees C). We've learned that Mars is a dynamic planet, Michael Meyer, lead scientist for NASA's Mars exploration program, told reporters in 2011.