Space roses, Cosmic Reindeer, Arctic space pendants, and more! ASTEROID FLYBY: Approaching from the direction of the sun, mountain-sized asteroid 2015 JO25 will fly past Earth on April 19th approximately 1.8 million km away. NASA says there is no danger of a collision. This unusually bright space rock is about twice as reflective as the Moon.
Broadcast Antennas. Radio and television broadcast stations transmit their signals via RF electromagnetic waves. Broadcast stations transmit at various RF frequencies, depending on the channel, ranging from about 550 kHz for AM radio up to about 800 MHz for some UHF television stations.
What do we use infrared radiation, microwaves and radio waves for? Infrared radiation is used for carrying signals from remote handsets and inside optical fibres. We use microwaves to carry satellite TV programmes and mobile phone calls. Radio waves are used for radio and TV broadcasting, radio communications and mobile phone calls. What are the hazards of these types of electromagnetic radiation? Different types of electromagnetic radiation are hazardous in different ways.