Our Galaxy
SALT 2019
Lying somewhere between young main-sequence stars and old white dwarfs, hot subdwarfs are blue stars with about half the mass, a tenth the diameter and ten times the brightness of the Sun.
Astronomers
Nobel Prizes for Physics: 2019
The 2019 Nobel prize for physics has been awarded to three scientists: James Peebles, Michel Mayor and Didier Queloz. This blog post will briefly outline why Mayor and Queloz were awarded their prize. In 1995 these Swiss astronomers announced the discovery of the first planet orbiting another ‘solar type’ star. Read more…
Climate
Brandolini’s Law: Climate – How Climate Change Works
Following from last week’s introduction to our climate change series, this week we have an article explaining how climate change actually works and why it happens. Firstly, we will be drawing on our sister planet Venus as an example. Earth’s Evil Twin Earth and Venus are, on the face of Read more…
Earth
Measuring Earth’s Gravity at AOP
Measuring Gravity As part of a survey to determine the true topography of Ireland by Ordnance Survey Ireland, AOP has recently hosted an experiment designed to measure the Earth’s gravity to an incredible precision, just 10 nms-2! That’s an incredible 0.00000001 ms-2! To put into context just how accurate that Read more…
Earth Satellites
5 Things To Thank The International Space Station For
When the first module of the International Space Station (ISS) launched from Kazakhstan in 1998, humans just had a small orbiting home, about the size of a bus. Over the past two decades it has expanded beyond recognition, and is now an orbiting science laboratory that is literally out of Read more…
Universe
How Will The Universe End?
We don’t like to think about it, but the world will end one day. It is likely to be engulfed by the Sun as it expands into a red giant star 6 billion years from now, but whether humans survive to see that day is up for debate (climate change…). With regards to the universe, Read more…
Astronomy & You
Radio Astronomy & Wi-Fi
Continuing our weekly Astronomy & You series we have an article explaining the invention of Wi-Fi from Tony Beasley. Tony is an IAU member and is President of Commission B4 Radio Astronomy within the organisation. Tony is also the Director of The National Radio Astronomy Observatory in the USA. The history Read more…
July
July Night Sky
Summer’s here! The weather’s heating up and skies will hopefully be clear for a bit of stargazing! There are lots of interesting sights in the sky this July, so while you may have to wait longer for it to get dark, get outside, allow your eyes to adjust and get Read more…
Astronomy & You
Astronomy & Electronic Imaging Detectors
This week our Astronomy & You series takes a look at Electronic Imaging Detectors and their effect on our lives. This piece was written by Ana I. Gomez de Castro. Ana is a full professor in Astronomy and Astrophysics and member of the Mathematics Faculty in the Universidad Complutense de Madrid Read more…
Astronomy & You
Astronomy & Magnetic Resonance Imaging
This week’s edition of our Astronomy & You series is a piece on the applications of Magnetic Resonance Imaging (MRI) to our everyday lives. The following piece was written by Gabriele Giovannini; vice-President of the IAU’s Division B and full Professor in the Department of Physics and Astronomy in Bologna Read more…