The most dangerous club in the Universe

What would a planet orbiting a pulsar look like from the ground? Would it look like a giant disco planet with a constant strobe light? Pulsar form from supernova explosions, and they are neutron stars...

PodcAstroholic – Main Challenges To Put A Human On Mars

In this PodcAstroholic we answer the question "What are the main challenges to send a human to Mars?"

Can a satellite hover over the Sun?

My friend Russell asked me under which condition an object would be able to stand still around the Sun. This is a very interesting question; it probes some fundamental facts about the solar system...

Shopping for rings

I have a space question. I know about the Roche limit but is there an upper limit to how big a ring can get compared to its planet? Asked by Dan Of course there are limits, the Universe is all about limits! But they're not as strict as one would think. We have found an object in 2012, J1407b, with a ring system 200 million kilometres in diameter. If the rings were centred on Earth they would cover the inner solar system all the way to the orbit of Mercury on the opposite side of the Sun.

Would I survive a nuclear attack on London by hiding under my mattress?

Last night I had a nightmare that the centre of London was nuked. In my half-sleep state I tried working out if I could survive just by getting under my mattress or if I...

A Ghostly Cradle Of Stars

If you wonder where we came from and how we got here, there's a step we are quite confident on. About 5 billions of years ago, before the Sun shone a single ray all...

Can anyone hear us?

Assuming that there are other intelligent civilisations out there in the universe, what is the likelihood that we'll ever be able to communicate? The key to answer this question is to look at the Drake...

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