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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

Trump's Greenland Gambit Ignites Transatlantic Tariff War: Global Markets on Edge

Tariff Threats Rise Over Greenland Annexation Drive Effective February 1, 2026, President Trump has significantly increased pressure on Denmark by threatening to levy 10% tariffs on major NATO and EU alliesincluding...

Asian Fund Managers Favor Japan, Taiwan, and South Korea for 2026 Amid AI and Chip Boom

Asian fund managers are growing increasingly bullish on Japan, Taiwan, and South Korea, while sentiment toward India has turned negative, according to Bank of Americas January fund manager survey. The shift reflects...

Trump Says $2,000 Tariff Dividend Possible Without Congress Approval

U.S. President Donald Trump said on Tuesday that his administration may be able to issue a $2,000 payout to American citizens without needing approval from Congress, citing the surge in revenue generated from his trade...

Japan Government Bond Rout Deepens as Election Spending Fears Shake Markets

Japans government bond market is experiencing a sharp sell-off as investors react nervously to rising political promises of tax cuts and fiscal stimulus ahead of a snap election. Prime Minister Sanae Takaichis decision to...

WTI Crude Oil Prices Slide as Inventory Concerns and Geopolitical Risks Weigh on Market

West Texas Intermediate crude oil prices declined on Wednesday as traders focused on mounting geopolitical uncertainty and expectations of a build in U.S. crude inventories, which overshadowed supply disruptions from...

Politics

Trump Signs Executive Order to Limit Wall Street Investment in Single-Family Homes

U.S. President Donald Trump on Tuesday evening signed a new executive order designed to curb Wall Street investors from buying and speculating on single-family homes, a move aimed at improving housing affordability and...

Trump’s Greenland Ambition Sparks NATO Tensions, Trade War Fears, and Global Market Turmoil

U.S. President Donald Trump has reignited international controversy by declaring there is no going back on his ambition to control Greenland, a move that has unsettled NATO allies, strained U.S.-Europe relations, and...

Syria Announces Ceasefire With Kurdish Forces as U.S. Pushes Integration Deal

Syria has announced a four-day ceasefire with Kurdish-led forces in the northeast, marking one of the most significant shifts in territorial control since the fall of former president Bashar al-Assad over a year ago. The...

U.S. Plans NATO Staff Reductions, Raising Fresh Concerns Over Alliance Commitment

The United States is planning to reduce the number of personnel stationed at several key NATO command centers, a move that is already heightening concerns across Europe about Washingtons long-term commitment to the...

Trump Says U.S. and NATO Will Reach Agreement on Greenland’s Future

U.S. President Donald Trump said on Tuesday that the United States and NATO will eventually come to an agreement regarding the future of Greenland, emphasizing that any deal would satisfy both Washington and the military...

Science

NASA and SpaceX Target Crew-11 Undocking From ISS Amid Medical Concern

NASA has confirmed that the agency, in coordination with SpaceX, is targeting no earlier than 5 p.m. Eastern Time (2200 GMT) on Wednesday, January 14, for the undocking of the SpaceX Crew-11 mission from the International...

Neuralink Plans High-Volume Brain Implant Production and Fully Automated Surgery by 2026

Elon Musks brain-computer interface company Neuralink is preparing for a major expansion, announcing plans to begin high-volume production of its brain implant devices and transition to a fully automated surgical procedure...

Jared Isaacman Confirmed as NASA Administrator, Becomes 15th Leader of U.S. Space Agency

The U.S. Senate has officially confirmed billionaire private astronaut Jared Isaacman as the new NASA administrator, making him the 15th leader in the agencys history. The confirmation, which took place on Wednesday, marks...

Senate Sets December 8 Vote on Trump’s NASA Nominee Jared Isaacman

The U.S. Senate Commerce Committee announced it will vote on December 8 on President Donald Trumps renewed nomination of private astronaut and tech entrepreneur Jared Isaacman to lead NASA. Isaacman, known for his...

NASA Cuts Boeing Starliner Missions as SpaceX Pulls Ahead

NASA has significantly scaled back Boeings Starliner program after years of technical issues and delays, announcing that the next Starliner mission to the International Space Station (ISS) will fly without astronauts. The...

Technology

Elon Musk Says Tesla Cybercab and Optimus Production Will Start Slowly Before Rapid Growth

Tesla CEO Elon Musk has cautioned investors and technology enthusiasts that the early production rate of the companys highly anticipated Cybercab robotaxi and Optimus humanoid robot will be agonizingly slow before...

Micron to Buy Powerchip Fab for $1.8 Billion, Shares Surge Nearly 10%

Shares of Taiwans Powerchip Semiconductor Manufacturing Corp jumped nearly 10% on Monday following news that U.S. memory chip giant Micron Technology plans to acquire one of Powerchips fabrication facilities in Taiwan,...

Tesla Revives Dojo Supercomputer Project With AI5 Chip at the Core

Tesla Inc (NASDAQ: TSLA) is set to restart development of its next-generation supercomputer, Dojo3, marking a renewed push into artificial intelligence infrastructure. Tesla CEO Elon Musk confirmed on Sunday that work on...

South Korea Seeks Favorable U.S. Tariff Terms on Memory Chip Imports

South Korea is moving to secure favorable treatment from the United States on tariffs affecting memory chip imports, following recent trade actions announced by the U.S. government. A spokesperson from South Koreas...

South Korea Sees Limited Impact From New U.S. Tariffs on Advanced AI Chips

South Koreas trade minister said a newly announced U.S. tariff on certain advanced computing chips is expected to have only a limited short-term impact on South Korean companies, while cautioning that future measures could...