When anti-science activists set out to drive astronomy from the state of Arizona by trumping up an environmental hazard, they were failing to prevent a problem that would creep across many places…

Astronomers have used Hubble to measure the distances to stars in nineteen galaxies more accurately than previously possible. They found that the Universe is currently expanding faster than the rate…

I'll be on David Livingston's the Space Show this Friday, 27th May, to talk about my new "Case for Moon". It's main themes are: first, the Moon as our natural first destination in the solar system.…

One belief is that Jupiter's moon Europa has a deep, hidden ocean of salty liquid water beneath its icy shell. Whether the Jovian moon has the raw materials and chemical energy in the right…

Using the oldest fossil micrometeorites - space dust - ever found, Monash University-led research has made a surprising discovery about the chemistry of Earth's atmosphere 2.7 billion years ago. The…

Unlike most asteroids, C/2014 S3 (PANSTARRS) was formed in the inner Solar System at the same time as the Earth itself, but was ejected at a very early stage and has not been baked by billions of…

You can never predict what treasure might be hiding in your own basement - a year ago, a 1917 image on an astronomical glass plate from the Carnegie Observatories' collection shows the first-ever…

Are you keen on humans in space, but skeptical about colonization of Mars as our first objective for space exploration? Do you think we will start with settlements supported from Earth, such as…

If you are keen on Mars colonization, it is not hard to find a future vision to inspire you. Elon Musk has plans to send a hundred people at a time in his proposed "Mars Colonial Transporter" and…

Untitled Document This is one of the questions I get asked most often since I started to cover the topic of asteroid impacts. Will humans will become extinct within a decade, or within a century? And…