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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

What should you do if you can’t pay your rent or mortgage?

The cost of living crisis is making it difficult for many people to pay their bills, including housing costs. Private sector rents have increased by an average 9% over the year to February 2024, and rising interest rates...

Some experts say the US economy is on the up, but here’s why voters don’t think so

Many Americans are gloomy about the economy, despite some data saying it is improving. The Economist even took this discussion to TikTok. When its US editor John Prideaux examined inflation, wage and employment numbers,...

Electric air taxis are on the way – quiet eVTOLs may be flying passengers as early as 2025

Imagine a future with nearly silent air taxis flying above traffic jams and navigating between skyscrapers and suburban droneports. Transportation arrives at the touch of your smartphone and with minimal environmental...

Electricity from farm waste: how biogas could help Malawians with no power

In sub-Saharan Africa, over 600 million people (more than 50% of the population) are without access to electricity. Malawi has one of the worlds lowest electricity access rates just 14.1% of the total population have...

High interest rates aren’t going away anytime soon – a business economist explains why

The Federal Reserve held interest rates steady at its May 1, 2024, policy meeting, dashing the hopes of potential homebuyers and others who were hoping for a cut. Not only will rates remain at their current level a...

Politics

Donald Trump Allegedly Offers Oil Execs a Deal to Scrap EV Incentives for $1B Donation

Former President Donald Trump reportedly proposed a $1 billion deal to oil executives, offering to end electric vehicle (EV) subsidies in return for campaign funding, according to The Washington Post. This move underscores...

Taiwan is experiencing millions of cyberattacks every day

Taiwan stands out as a beacon of democracy, innovation and resilience in an increasingly autocratic region. But this is under growing threat. In recent years, China has used a variety of grey zone tactics to pressure...

What the Supreme Court is doing right in considering Trump’s immunity case

Following the nearly three-hour oral argument about presidential immunity in the Supreme Court on April 25, 2024, many commentators were aghast. The general theme, among legal and political experts alike, was a...

US student Gaza protests: five things that have been missed

Coverage of the recent student encampments at more than 50 universities across the United States has focused on confrontations between opposing groups of protesters or between protesters and police. The spectacle of...

Will Solomon Islands’ new leader stay close to China?

Former foreign minister Jeremiah Manele has been elected the next prime minister of Solomon Islands, defeating the opposition leader, Matthew Wale, in a vote in parliament. The result is a mixed bag for former prime...

Science

IceCube researchers detect a rare type of energetic neutrino sent from powerful astronomical objects

About a trillion tiny particles called neutrinos pass through you every second. Created during the Big Bang, these relic neutrinos exist throughout the entire universe, but they cant harm you. In fact, only one of them is...

The Mars Sample Return mission has a shaky future, and NASA is calling on private companies for backup

A critical NASA mission in the search for life beyond Earth, Mars Sample Return, is in trouble. Its budget has ballooned from US$5 billion to over $11 billion, and the sample return date may slip from the end of this...

Dark matter: our new experiment aims to turn the ghostly substance into actual light

A ghost is haunting our universe. This has been known in astronomy and cosmology for decades. Observations suggest that about 85% of all the matter in the universe is mysterious and invisible. These two qualities are...

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,...

Technology

Shiba Inu (SHIB) Climbs 7% in an Hour, Market Watches in Surprise

Shiba Inu (SHIB) surged in value by 7% in a single hour, outperforming the larger crypto market bounce. Unexpected Surge in Shiba Inus Value This gain is especially significant because it occurred without the...

Japanese Firm Metaplanet Buys 117 BTC, Diversifies Reserve Amid Yen Drop

Amid a weakening yen, Metaplanet, a Japanese investment giant, has strategically shifted to Bitcoin, purchasing 117.7 BTC worth $7.2 million. This move aligns with their new treasury strategy to bolster economic resilience...

CNBC’s Ran Neuner Reveals Personal Picks for Crypto Portfolio

CNBCs Ran Neuner has shared his new cryptocurrency investments, choosing XRP, TON, and, notably, Solana. Highlighting each for its unique potential in the evolving crypto market, Neuners selections spotlight technological...

Philippines Tests Peso-Backed Stablecoin, Eyes Future Financial Innovations

In a groundbreaking initiative, the Bangko Sentral ng Pilipinas has commenced sandbox testing for the PHPC, a stablecoin pegged 1:1 to the Philippine peso. This pilot, a collaboration with Coins.ph, aims to evaluate the...

El Salvador Launches $360M Bitcoin Treasury Monitoring Site

El Salvador was the first country to accept Bitcoin as legal cash in 2021, and it now has over 5,700 BTC. Details of El Salvadors Bitcoin Monitoring Platform El Salvador has developed its proof-of-reserves website,...