I’m the Universe, hear me roar.

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The cosmos has plenty of terrifying Lovecraftian features, but one of my favourites is the Space Roar. There is a loud radio signal, described as a constant hiss, that seems to pervade the cosmos. It is louder than the radio signature of radio galaxies, and it is without explanation.

Travelling through the cosmos

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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...

One Planet, One Climate, One culture.

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One of my biggest pet peeves about sci-fi universe building is the lazy approach in building alien civilisations. We often see the trope showing one world, one climate, and...

PodcAstroholic – Main Challenges To Put A Human On Mars

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

PodcAstroholic – Why is the Sky Dark At Night?

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In this PodcAstroholic we answer Olbers' Paradox: "Why is the Sky Dark At Night?"

Has anyone got a recipe for artificial gravity?

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One of the underlying ideas in Einstein's general relativity is that for an observer, the acceleration due to gravity, or the acceleration due to thrust, are identical. This is...

Why does Iapetus have two colours?

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Iapetus is the third largest satellite of Saturn, and it is the largest object in the solar system not in hydrostatic equilibrium. Iapetus is a moon of Saturn known for its colour dichotomy. It has a dark side and white side, and it is often called the Yin Yang moon.

More On Gravitational Waves

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In a previous post, we discussed the groundbreaking discovery of gravitational waves and it's importance for science as a whole. Now LIGO has observed another detection, and it has the...

What Would Being In Space Without A Suit Be Like?

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Spacesuits are a fundamental tool for keeping astronauts safe in space, but the protection they supply is often mistaken, exaggerated or romanticised in science fiction.   Spacesuits are garments worn...

Colliding stars

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I know that likelihood of stars colliding is very low, but have there been papers describing the theoretical process of star collision? James, London I think we can divide star-collision into...

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