What Would Happen To The Earth If The Sun Would Disappear?

The Sun is responsible for all life on Earth and most of our planet's means of energy production depends on the Sun. We are told that without it we cannot survive, or at least...

Back to the Past

Time is a curious dimension. Although we might be still in space, there's no way for us to be still in time. And while we can explore every direction in space, time has a...

Travelling through the cosmos

Space is big. The Voyager probe, launched in 1977 to explore Jupiter and Saturn, took 36 years to leave the Solar System. It is the furthest human object from us, and it is still...

How galaxies influence planet formation

Does the specific location of a solar system within a galaxy affect the solar system's structure? Like does distance from the centre affect how big the star is, or what kind of planets form? Stuart,...

PodcAstroholic – How Can Spiral Galaxies Keep Their Shape?

In this PodcAstroholic we answer the question "How can spiral galaxies keep their shape?"

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...

Calories in anti-matter

Dear Mr Science Guy, How many calories would get in a bottle of antimatter? How long would it take to burn off at the gym if you drank it? Thank you, Rob, age 30 Rob asks a very...

How big is the biggest galaxy in the Universe?

If by big we mean physical dimension, the largest known galaxy is most likely IC1101. IC1101 is gargantuan even among galaxies; it's a super elliptical galaxy with a diffuse stellar halo that to extends to at...

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...

Mergers in G-Major

There has been a surprising affinity between astronomy and music. Both needed the inspiration of the muses to be performed in Ancient Greece, and expressions like the Music of the Spheres just shows the...

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