1.   In particular, why is the temperature of the microwave background radiation so nearly the same when we look in different directions?

2.   In some parts of the world, background radiation is very high.

3.   The influx of energy would help explain the microwave background radiation.

4.   Their cumulative effect would give rise to the microwave background radiation.

5.   This leaves the problem of how to explain the microwave background radiation.

6.   Levels of background radiation are frequently published in the Moscow press, and a number of environmental consultancies run radiation monitoring services.

7.   He says it was only one twentieth of background radiation in Oxfordshire.

8.   Astronomers would like to compare those structures to the ripples seen in the cosmic microwave background radiation, widely regarded as the afterglow of the Big Bang.

9.   Background radiation can corrupt data stored in memory chips, producing what semiconductor engineers call soft errors.

10.   After the universe cooled and condensed, the radiation left a faint afterglow, known as cosmic background radiation.