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Published: 08 October 2020

World Space Week 2020 at 黑料社: Meet Dr Michelle Collins

Astrophysicist Dr Michelle Collins discusses life on Venus, dwarf galaxies, Star Trek: Voyager and why telescope naming protocols should be improved.

What was your path to becoming an astrophysicist?

I didn鈥檛 always enjoy science. At primary school, I got a report saying I had no interest in the subject. It wasn鈥檛 until I approached my A Levels that the sciences became more appealing. I took maths, physics, chemistry and biology. But I had to move schools to do that, as my old one wouldn鈥檛 let me take those four A Levels together.

When I got to my new school, my physics teacher asked me if I really wanted to take physics as traditionally only boys studied it. That made me determined to be good at it. My parents claim I came home adamant I鈥檇 be doing more physics!

For my degree, I studied physics with astrophysics. The latter was the part of the course that most interested me. I wanted to learn more about space. There are so many big unanswered questions about the universe and our place in it.

Were you excited about the news from Venus?

As with most astronomy discoveries, the news got leaked before the embargo was lifted. But this always happens. There are lots of conspiracy theories about space, but we can鈥檛 hide anything within our own community 鈥� let alone outside it!

I was excited when I learnt it was about detecting a possible signature of life. We often think of Venus as Earth鈥檚 evil twin. They鈥檙e similar in size and similar in distance from the Sun. But Venus has had an extreme climate change that we think has been driven by volcanic activity. It鈥檚 completely uninhabitable. The upper atmosphere is so corrosive it destroys space craft with relative ease. Then it gets hotter and denser as you travel towards the surface.

The news we may have found some type of life means there may be a chance the planet had life in the past. It鈥檚 motivated a lot of people to think differently about Venus.

What鈥檚 your particular area of research?

I do a lot of work observing dwarf galaxies, which are the smallest galaxies in the universe. These are interesting objects of study because they can tell us a lot about early galaxy formation and evolution because they鈥檙e the smallest building blocks of larger galaxies.

What鈥檚 your favourite current research project?

We have a lot of observations we鈥檙e working on concerning isolated dwarf galaxies. These are fairly nearby, but they鈥檙e far enough away from our galaxy so they鈥檙e isolated from the effects of its gravity.

One thing we鈥檇 like to know is whether these isolated dwarf galaxies have even smaller dwarf galaxies around them. So I鈥檓 working with a student to survey these little galaxies in detail to look for really small, faint things orbiting around these galaxies. This could help us understand how galaxies are evolving and what dark matter could be.

You鈥檙e essentially looking for stuff nobody else has seen?

Yes. We鈥檙e looking for really small faint things that people haven鈥檛 had the data sets to search for before. So we鈥檙e doing deep, targeted observations to look for these.

For these sort of observations, we have to submit a written proposal to request time at a big astronomy research centre. So we鈥檝e used a 4-metre mirror telescope in the Canary Islands called the William Herschel telescope.

For projects in the past, we鈥檝e used the 10-metre telescope at Hawaii鈥檚 Keck Observatory and Chile鈥檚 Very Large Telescope.

Is that its real name?

Yes. Chile are constructing the Extremely Large Telescope, too, which will be a 30-metre device. Our naming conventions sometimes aren鈥檛 particularly original. If we need really deep and clear imaging, we use the Hubble Space Telescope.

Do you have any favourite space-related films or TV series?

My dad, my brother and my sister were all interested in Star Trek. We watched a lot of sci-fi and I still enjoy it. I was very keen on Star Trek: Voyager. It was cool to have a female captain in charge.

I recently watched a new series on Netflix called Away, which is a drama about sending the first team of people to Mars. Fortunately, I try not to be too analytical and constantly fact-check the science when I鈥檓 watching.

Find out more about our Astrophysics Research Group and studying in our Department of Physics.

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