Science I’ve read about background radiation fields that fill the universe. Is the infrared radiation as ancient as the microwave, and are there other cosmic fields of radiation besides these two?
Astrophotography, Human Spaceflight, Telescopes and Equipment Orion Parsec 10100C Color Astronomical Imaging Camera
Science If a brown dwarf orbited the Sun at the same distance as Jupiter, would life have evolved on Earth?
Science What would cause Earth’s orbit to become more circular instead of its present elliptical orbit, and has this ever happened before?
