The map shows the cosmic microwave background (CMB), a faint remnant radiation from the early stages ... per second per megaparsec distance from Earth. ACT data essentially confirms this, but ...

The mega sunspot group that pummelled Earth with solar radiation earlier this month is ... scientists are tracking the sunspots, and a map available on spaceweather.com suggests AR3664 was the ...

Man has always been exposed to natural radiation arising from the earth as well as from outside the earth. The radiation we receive from outer space is called cosmic radiation or cosmic rays. We also ...