What Would Happen If The Sun Disappeared ? – AGAIN!

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In a previous post, I discussed how long the Earth would be able to survive without the Sun. We had to assume that our star would magically disappear into...

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.

What’s going on with the moons of Jupiter?

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The orbit of Jupiter's moons are all messed up and seemingly overlap. Do they interact much? Greg, U.S. Jupiter has 67 confirmed moons. Of these, 8 are regular satellites with nice...

A ‘Van Gogh View’ Of The Polaris Flare

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Space images can often be breathtaking and the night sky has often inspired artists to produce incredible masterpieces. Sometimes even the way astronomers represent data can be both scientifically...

PodcAstroholic – Why is the Solar Corona so hot?

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In this PodcAstroholic we answered the question "Why is the solar corona hotter than the surface of the Sun?" UPDATE!!! I got a scolding (or a scalding since we are talking...

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...

In Space no-one can hear you scream

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According to the World Health Organization, 360 million people worldwide have disabling hearing loss. For the remaining 95% of the population, sound is a cardinal part of our sensory...

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?"
Credit: Wikicommon

How hot or not is a Black Hole?

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Short Answer - the temperature of a black hole is inversely proportional to its mass. For a black hole with the same mass as our Sun the temperature is 60 billionths of a degree kelvin.