Physical Science

Physics

LOW-LEVEL RADIATION

Our bodies are subject to all sorts of chemical and physical insults from the food we eat to thermal changes that occur. These insults' to our body, as they are called, cause breaks in the strands of our DNA at very high rates: 8,000 per body cell per hour. Any one of these can result in cancer. The lifetime damage is immense: 5 x 1019 breaks in 75 years so it would seem that it's

Astronomy Will the human race ever reach the stars?

vote now: Yes or No - (view results)

Yes

by Andrew Browell

The problem, as it has been so beautifully stated, is time. Eventually it is conceivable

by Colin Gallagher

If the human race stays on its current trajectory in the realm of space travel, then humans will never

Astronomy The Big Bang Theory

by Bryan Belrad

Echo of Creation

The Cosmic Microwave Background Radiation (CMB) has been hailed since its discovery in 1965 as the ultimate proof

Astronomy An explanation of the Fermi paradox

by Perry McCarney

It IS rocket science! But fortunately we do not need to be conversant with the technical specifications of spacecraft propulsion

Astronomy What is dark energy?

by Ramona Taylor

In April 1990, when the Hubble Space Telescope (HST) was launched into orbit, scientists had high hopes that the telescope would help

Astronomy How to teach kids about the night sky

by Dawn Young

There is nothing more magical than gazing upon the clear night sky. Its mysteries captivate imagination and spark creativity

Astronomy

Chemistry

Physical Science (Other)

Physics

: Physical Science