Artikel-artikel mengenai Cosmology

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The Alpha Magnetic Spectrometer has produced results consistent with the presence of dark matter. NASA

New light on dark matter: space station magnet attracts praise

Nobel prizewinner Samuel Ting, early this morning (AEDT), announced the first results from the Alpha Magnetic Spectrometer (AMS) search for dark matter. The findings, published in Physical Review Letters…
How is the spin of black holes measured, and what can it tell us about our universe? NASA/Goddard Space Flight Center

Cutting through the spin on supermassive black holes

Astronomers have measured the spin of a black hole buried in the heart of a galaxy located 56 million light years away, and discovered it was spinning quickly – about as quickly as it could go. That was…
The chances of the weekends two asteroid events being related are next to zero. NASA/JPL-Caltech

Forensic astronomy: the Russian meteor and 2012 DA14

One of the most exciting things about science is the detective work, and never was this more the case than Friday. Within an hour or so of the event, almost everyone had seen the dramatic footage of the…
When it comes to asteroids, alert but not alarmed may be the best approach. NASA

Look out: close encounters of the asteroidal kind

An asteroid named 2012 DA14 will come within 27,700 kilometres of Earth early on Saturday morning Australian time (around 6:30am AEDT). At this distance the asteroid will pass within the orbits of several…
Two lobes of charged particles (light blue) have been discovered coming from the galactic centre. Ettore Carretti, S-PASS, Axel Mellinger, Eli Bressert.

Meet the largest structure ever discovered in our galaxy

It’s not every day that you discover a huge structure that stretches more than half way across the sky. But this exact thing happened to the international team of astronomers I was leading, as we pored…
The Andromeda galaxy and its companions is challenging the very foundations of cosmology. Adam Evans/Wikimedia Commons

Cosmic dance challenges our understanding of the universe

Deep images of the sky reveal that the universe contains billions of galaxies. Some, such as our own Milky Way, are immense, containing hundreds of billions of stars. Most galaxies, however, are dwarfs…
The SKA is on the horizon, but how do we get from here to there? Pete Wheeler, ICRAR

Aspiration vs delivery: the long road to the Square Kilometre Array

The Square Kilometre Array (SKA) radio telescope has been on the cards since the early 1990s. It took until May of last year to find out where it will be built – in South Africa, Australia and New Zealand…
When you’re celebrating the New Year, be sure to spare a thought for Vesto Slipher and the birth of cosmology. Nuwandalice

Expand into 2013 by toasting 100 years of modern cosmology

As 2012 comes to a close and you toast the New Year, be sure to also raise a glass to one Vesto Melvin Slipher. My intent is to describe what Slipher did 100 years ago in Flagstaff, Arizona and why this…
Why do so many people believe in the Mayan apocalypse myth? Apocalypse image from www.shutterstock.com

Apocalypse myths show our fear of the world as we know it

If you believe the hype, the end of the world has finally come. The Mayan calendar’s “long count” began on 13 August 3114 BCE and will end today on 21 December 2012. Why do people believe the world will…
Everything we see around us could be little more than bits in a giant supercomputer. petertandlund

Alert: you may be living in a simulated universe

As a cosmologist, I often carry around a universe or two in my pocket. Not entire, infinitely large universes, but maybe a few billion light years or so across. Enough to be interesting. Of course, these…
Programmers will find ways to harness the massively distributed global internet. Night Owl City

Can the mother of all supercomputers save us from Big Brother?

Today I’m annoyed at Facebook. Among the amazingly witty and touching postings from my friends and Amnesty International are “pages you might like” and advertisements for things I don’t need, especially…
Despite ongoing research, we still know little about the universe’s earliest moments. tychay

‘Melbourne researchers rewrite Big Bang theory’ … or not

Earlier this week, headlines in several major newspapers screamed: “Melbourne researchers rewrite Big Bang theory”. You might think this is a reference to a new script for a popular TV show, but as a cosmologist…
The Big Bang theory and the existence of God are ideas often grappled with when thinking about how the universe was created. DamienHR

The origin of the universe: is there a role for God?

Last week’s Global Atheist Convention and debates between prominent atheists and theologians in the Australian media has seen arguments about the existence of God getting a thorough airing. In my view…
Collectively, these dishes would have the power to detect signals from the earliest years of the universe. AAP/West Australian Government

Supercomputer readies scientists for world’s most powerful telescope

A new University of Western Australia supercomputer that is 10,000 times faster than the average office PC could help scientists to develop the data processing capacity for the world’s largest telescope…

Milky Way’s black hole devouring asteroids

X-ray flares from the supermassive black hole at the centre of the Milky Way may be caused by the regular vaporisation of…
Two “new” black holes, in relatively nearby galaxies, are the largest ever found. tsand

Scary monsters (and supermassive black holes)

Black holes have long been the staple of science fiction, being monstrous beasts with a gravitational pull that prevents even light from escaping. As well as being useful plot devices, offering mechanisms…

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