syz·y·gy (sĭz′ə-jē)
noun : an alignment of three celestial bodies, such as the sun, moon, and earth during an eclipse.
also : a podcast wherein real-life, actual astronomer Dr Emily Brunsden from the University of York and not-astronomer but enthusiastic science nerd Dr Chris Stewart explore the universe.
The biggest black hole ever has been found — not supermassive, but *ultra*massive. Emily takes Chris on a tour of all the types of black hole, from the speculative minis, through the solar and intermediate mass kinds, to the stonking supermassive and frankly ludicrous ultramassive. And we ask, how exactly do you see a black hole when it's ... you know ... black?
In the hunt for life in the universe, astronomers are looking hard at the catalogue of potentially habitable exoplanets. The ones orbiting Red Dwarf stars seem promising — Red Dwarfs are really common, and we've just launched a shiny new space telescope that's perfect for observing them, their planets, and even their planets *atmospheres*. Trouble is, Red Dwarf stars are ... nasty. Like, really mean. Emily gives all the details on why we might not be discovering signs of life near a Red Dwarf any time soon.
"These six galaxies break cosmology!" scream the headlines. Yeah, nah — yeah, astronomers have found some galaxies in the JWST data that are crazy old, and yet seem to be just way too big. But nah: this doesn't mean cosmology is broken. As usual, the scientists ignore the click-baity headlines, roll their eyes and get on with figuring it all out. Plus, what time is it on the Moon? Not a simple question.
The Earth's core has been acting weird for at least 70 years now. We're not sure why, but sometimes it's spinning faster than the surface, sometimes slower. Emily explains how we know what's happening down in the core, which is impressive enough ... but then she shows how astronomers do the same for very distant stars, and Chris's head explodes. Plus, it's been a big week for aurora fans, and there's even some bonus Einteinian weirdness at the end.
Emily's back from New Zealand, Chris is ... still just around, really. And Syzygy returns from hiatus with Episode 100, looking back on a huuuuuge year for the Just Wonderful Space Telescope. Emily takes us through the five "first-light" images released from JWST several months ago — plus one little bonus image that they found behind the couch. (Oh, and sorry for the audio quality on this one — for boring technical reasons we had to share one microphone ... Back to our usual high-quality production values for 101!)
You've heard of supernovae, the just stupidly big explosions that mark the end of some stars' lives. Maybe you know there are different kinds of supernovae — type 1a, type II ... Did you know that, smaller than a super nova, there's just a plain, vanilla nova? Or that, even bigger than super, there's hyper-novae? Well, hold onto your hats, because there's a new nova in town, and it's ... really quite small. On the nova scale, anyway. Emily gives all the goss on cute little micronovae. Plus, we school astronomers on the tricky subject of communicating large quantities of energy.
Astronomers have spotted the biggest comet ever! And it's heading for Earth! Except (a) it's not heading towards Earth — it's closest approach to us will be beyond Saturn's orbit — and (b) it's not technically the biggest. But it's still cool! Emily's here with loads of info about comets, big comets, things that are sort of comets, how many tails they have (hint: it's more than one), and heaps more besides.
A very different story this week: using high-energy particles, originating from violent supernovae and supermassive black holes, to scan the insides of the Great Pyramid of Cheops. Physicists are teaming up with Egyptologists to check some tantalising results from 2017 thaty suggest there just might be a previously unknown cavity — an open space — inside the Great Pyramid. Could it be a new, hidden room? A vault filled with ancient treasure? Or just somewhere they kept all the heating ducts and old pain cans? Plus, Syzygy is officially setting the agenda for astronomy research, and Emily unwraps some baby presents!
For the latest — and last? — baby-themed episode, we talk baby planets and how they're made. And sure, we've talked about this before in previous episodes, but this time Emily comes with brand new research that shows an actual protoplanet forming from the stellar disk. And even better, the possibility that we can even spot a proto*moon* forming around a protoplanet. Plus, for any astronomers looking for ideas, she's got her Top 5 list of unsolved planet questions.
