PodcAstroholic – Why Is Pluto Not A Planet?

In this PodcAstroholic we answer the question "Why is Pluto not a planet?" Longer discussion in the vlog

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...

One Planet, One Climate, One culture.

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 one language. Given the variety...

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...

How dangerous is it to cross an asteroid field?

How easy is to navigate through an asteroid field? Do we need to take precautions when we send probes through them? Andrew, Sidney. I'm afraid TV shows and movies have lied to you: asteroid fields are...

Colliding stars

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 three classes: Stellar Mergers Binary collisions Stellar Collision Under...

“The Stars Were Aligned”

Sometimes inspiration strikes in unusual ways at unusual times. I was tagged in a quote tweet where Prof Peter Coles states that as an astrophysicist he must contest Prince Harry's statement that "the stars...

A Galaxy Interaction That Deceives The Eyes

This NASA/ESA Hubble Space Telescope photograph is one of my favourite images of interacting galaxies, but it's actually a bit of a cheat. The galaxies are not interacting at all. The galaxies are simply in...

What Would Being In Space Without A Suit Be Like?

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 by astronauts to survive the...
Credit: Wikicommon

Will Earth be sucked in by the Black Hole at the centre of the...

Is the supermassive black hole at the centre of the Milky Way going to eat the Earth? Ross, UK No, the Earth is not in any danger from the supermassive black hole (SMBH) at the centre...

TRENDING RIGHT NOW

Dark, seasonal flows emanate from bedrock exposures at Palikir Crater on Mars in this image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. Image Credit: NASA/JPL-Caltech/Univ. of Arizona

Water flowing on Mars

video

Boiling water with ice

Mergers in G-Major

Leaving The Universe Behind