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Michael J. I. Brown

Associate professor, Monash University
I am an observational astronomer, studying how galaxies evolve over billions of years.

I was born and raised in Melbourne’s southeastern suburbs. My interest in astronomy began as a child, when the Voyager spacecraft visited the outer planets. I undertook my undergraduate and postgraduate studies at the University of Melbourne during the 1990s. For my PhD, I used (now antiquated) photographic plates to identify thousands of galaxies and measure their distribution in space.

In 2000 I joined the staff of the National Optical Astronomy Observatory, and started working on surveys of the distant Universe with large ground-based telescopes and satellites. In 2004 I was awarded Princeton University’s Henry Norris Russell Fellowship, and studied the growth of the most massive galaxies. Using thousands of galaxies in the constellation of Bootes, I found that the most massive galaxies have grown slowly over the past seven billion years, which is almost certainly due to mergers of galaxies.

Since 2007 I have been at Monash University’s School of Physics and Astronomy. I am measuring spectra of galaxies across the electromagnetic spectrum, which is useful for measuring the distances to galaxies, the luminosities of galaxies and how rapidly galaxies form stars. I am also using large astronomical surveys to measure how rapidly galaxies are growing, and how this growth compares to the growth of dark matter halos.

When you look up, how far back in time do you see?

Dec 27, 2018 23:58 pm UTC| Science

Our senses are stuck in the past. Theres a flash of lightning, and then seconds pass until we hear the rumble of distant thunder. We hear the past. We are seeing into the past too. While sound travels about a...

Looking at the universe through very different 'eyes'

Jan 22, 2018 11:39 am UTC| Insights & Views Science

We are bathed in starlight. During the day we see the Sun, light reflected off the surface of the Earth and blue sunlight scattered by the air. At night we see the stars, as well as sunlight reflected off the Moon and the...

Space Science Series

We can learn a lot from the changing night sky

Jan 07, 2017 01:10 am UTC| Science

You cannot feel or hear the world turning. It does not rumble through space. But you can see it turn with your own eyes every day and night. And, with patience, you can see Earth travel around the Sun. As the globe...

How to quickly spot dodgy science

Jan 04, 2017 05:00 am UTC| Science

I havent got time for science, or at least not all of it. I cannot read 19,000 astrophysics papers every year. No way. And I have little patience for bad science, which gets more media attention than it deserves. Even...

Trump has embraced pseudoscience and its deceptive tactics in a post-truth world

Dec 12, 2016 09:30 am UTC| Science Politics

As a scientist, I expect the Trump presidency to have a curious familiarity. Why? Because the relentless stream of falsehoods and character attacks of Trumps campaign mainstreamed disinformation tactics that biologists,...

Space Science Series

Less secrecy could help astronomy stop the bullying and harassment within its ranks

Nov 23, 2016 03:00 am UTC| Insights & Views Science

Shocking allegations of bullying, harassment and sexual assault at CSIROs Astronomy and Space Sciences (CASS) division were revealed on Sunday by the ABCs Background Briefing program. In CASS alone, the Radio National...

UFOs, climate change and missing airliners: how to separate fact from fiction

Jun 20, 2016 06:47 am UTC| Insights & Views

If youve been on social media then perhaps youve seen the Ancient Aliens meme; a wild-haired alien aficionado Giorgio A. Tsoukalos attributing all manner of things to aliens. Giorgio A. Tsoukalos is a well known...

Economy

Beyond the spin, beyond the handouts, here’s how to get a handle on what’s really happening on budget night

Three weeks from now, some of us will be presented with a mountain of budget papers, and just about all of us will get to hear about them on radio, TV or news websites on budget night. The quickest way to find out what...

Johannesburg in a time of darkness: Ivan Vladislavić’s new memoir reminds us of the city’s fragility

Ivan Vladislavić is Johannesburgs literary linkman. He tells us, in the first pages of his new book, The Near North, that before cities were lit, first by gaslight and later electricity, people of means paid torchbearers...

What if the Reserve Bank itself has been feeding inflation? An economist explains

Heres something for the board of the Reserve Bank of Australia to ponder as it meets next month to set interest rates. It has pushed up rates on 13 occasions since it began its attempt to restrain inflation in May...

China’s new world order: looking for clues from Xi’s recent meetings with foreign leaders

There is broad consensus that Chinese foreign policy has become more assertive and more centralised in the decade since Xi Jinping has ascended to the top of Chinas leadership. This has also meant that Chinese foreign...

How India’s economy has fared under ten years of Narendra Modi

More than 960 million Indians will head to the polls in the worlds biggest election between April 19 and early June. The ruling Bharatiya Janata Party (BJP), which is led by Prime Minister Narendra Modi, is seeking a third...

Politics

Labour can afford to be far more ambitious with its economic policies – voters are on board

To say that the Labour party is flying high in the polls is something of an understatement. But despite its consistent lead against the Tories, the opposition finds itself in a rather odd position: on the cusp of power but...

History for sale: what does South Africa’s struggle heritage mean after 30 years of democracy?

One of my favourite statues is the one of Nelson Mandela at the Sandton City shopping centre in Johannesburg. Larger than life, its oversized bronze shoes shimmer in the evening light, polished by the hands of many...

Sudan: civil war stretches into a second year with no end in sight

In the early hours of April 15 2023, the Rapid Support Forces (RSF) a Sudanese paramilitary force attacked the military airstrip in the town of Merowe and deployed troops across strategic locations in Sudans capital,...

Turkey’s suppression of the Kurdish political movement continues to fuel a deadly armed conflict

The world has 91 democracies and 88 autocracies. Yet 71% of the worlds population (some 5.7 billion people) are living under autocratic rule, a big jump from 48% ten years ago. This trend towards authoritarianism can...

Georgia is sliding towards autocracy after government moves to force through bill on ‘foreign agents’

Georgias ruling party attempted to pass a controversial bill on foreign agents in March 2023. The law would have required civil society groups and the media to register as being under foreign influence if they receive...

Science

A Nasa rover has reached a promising place to search for fossilised life on Mars

While we go about our daily lives on Earth, a nuclear-powered robot the size of a small car is trundling around Mars looking for fossils. Unlike its predecessor Curiosity, Nasas Perseverance rover is explicitly intended to...

The rising flood of space junk is a risk to us on Earth – and governments are on the hook

A piece of space junk recently crashed through the roof and floor of a mans home in Florida. Nasa later confirmed that the object had come from unwanted hardware released from the international space station. The 700g,...

Peter Higgs was one of the greats of particle physics. He transformed what we know about the building blocks of the universe

Peter Higgs, who gave his name to the subatomic particle known as the Higgs boson, has died aged 94. He was always a modest man, especially when considering that he was one of the greats of particle physics the area of...

Could a telescope ever see the beginning of time? An astronomer explains

The James Webb Space Telescope, or JWST for short, is one of the most advanced telescopes ever built. Planning for JWST began over 25 years ago, and construction efforts spanned over a decade. It was launched into space on...

US media coverage of new science less likely to mention researchers with African and East Asian names

When one Chinese national recently petitioned the U.S. Citizenship and Immigration Services to become a permanent resident, he thought his chances were pretty good. As an accomplished biologist, he figured that news...

Technology

DeepL Unleashes AI-Powered Tool for Business Writing

DeepL is a translation service from Germany, and it announced on Friday, April 26, that it would launch a new tool called DeepL Write Pro. It is an AI-based writing assistant created to help businesses with their writing...

Arthur Hayes Predicts Major Bullish Crypto Market Recovery Signal From US Treasury Department

Arthur Hayes, co-founder of BitMEX, has identified a potential boost for the cryptocurrency and stock markets based on recent U.S. Treasury actions. These actions could inject substantial liquidity, fueling a bullish...

Tesla Cybertruck Spotted in Sydney Sparks Debate: Potential Australian Release?

As the Tesla Cybertruck makes unexpected appearances on the streets of Sydney, speculation swirls about its potential availability in Australia, despite previous doubts regarding its local launch. Tesla Cybertruck...

Hertz to Offload 30K EVs This Year, Deepens Cuts Amid Mounting Fleet Losses

In a recent financial revelation, Hertz disclosed continued losses from its electric vehicle (EV) investments, announcing plans to sell 30,000 EVs this year amid depreciating values and escalating maintenance...

Toyota Motor Launches Trial for EV Pickups in Thailand

Toyota Motor Corporation launched the trial for its electric pickup trucks in Thailand. The Japanese automaker said its pilot project brought nine fully electric Hilux Revo pickups to key Thai market. According to...