Tag: astronomy

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How often do asteroids and comets hit the Earth?

From shooting stars to boulders that can destroy a country — what actually happens when the Earth is struck by objects of different sizes?

Five myths about the Big Bang

Where did the Big Bang happen, and what was going on around it? Two physicists take us through the most common misunderstandings of what the theory is about.

Svalbard's special northern lights

SHARE YOUR SCIENCE: Svalbard's unique geographical position gives the opportunity to observe both the green night time aurora and the redder daytime aurora. But what is the difference?

Geologists want people to help them hunt for meteor craters

Just two have been found on land in Norway so far. The world tally is 191, a number which keeps increasing. Geologists now want Norwegians to hunt for more craters.

A new solar cycle may be underway

A new solar cycle has probably begun. It may peak in just a few years.

All existence on the edge

The entire universe is unstable. Suddenly it could change all its physical game rules. That would be the definitive end of happy hour for humanity.

Giant tornadoes fire up the solar atmosphere

How can the outer regions of the Sun’s atmosphere be upwards of 150 times hotter than the surface? One of the oldest problems of astrophysics has now been partially explained.