When Yuri Gagarin blasted into orbit in 1961 to become the first human in space, he was already 14 years behind the first animals from Earth. The fruit flies that were flew to space in 1947 were just the first of many different animals in the decade and a half before Gagarin’s orbital flight that were used to test equipment and living things’ capac…

Earth has a new moon! well, for about 8 weeks anyway. Asteroid 2024 PT5 has been captured by Earth’s gravity and will be in orbit until late November 2024. This is really unusual and there have only been a few confirmed mini moons in the past. Our new temporary neighbour is only about 11 metres across and won’t be visible to anyone who doesn’t have…

Boeing’s Starliner space capsule blasted off for its first crewed test flight in early June. Great news right? Turns out, no. After arriving at the International Space Station, some technical problems meant that it couldn’t be used to take its crew of Barry ‘Butch’ Wilmore and Suni Williams back to Earth. The two astronauts were left with no way to…

NASA's Curiosity rover touched down on Mars in August 2012, and it's been exploring the Red Planet all that time. There have been some amazing discoveries and it's travelled over 30km but it has just made the most scientifically significant discovery of its 12 year career, and did it simply by running over a rock! One of Curiosity's wheels crushed …

As I write this, just a couple of days have passed since the Chang'e 6 sample return capsule touched down with its historic payload. The first sample of rock and soil from the far side of the moon touched down on Earth. This has the potential to unlock some of the secrets from the side of the moon that we never see from Earth, why is the lunar crus…

In September 2023, Greg Brennecka stopped by to preview the return to Earth of the OSIRI-REx asteroid Bennu sample return capsule. The sample landed safely and the mission scientists like Greg Brennecka have started their analysis. Some of our toughest questions are being answered by the data already. How old is Bennu? Is there organic material? Wh…

Titan. The largest moon in the Saturnian system has been a candidate as a habitable world ever since NASA’s Cassini mission sent back the first radar images of its surface in 2004. Astrobiologist Dr. Catherine Neish of Western University in Canada has spent years studying Titan, and has just published a study on the habitability of Titan. Catherine…

Space and cosmology throws up some strange effects sometimes, none stranger than spaghettification. Stephen Hawking coined the term for the stretching out that happens when you get close to a black hole. Let's take a look at what it really is, how it works, and if we should have anything to fear from spaghettification... Follow Cosmic Coffee Time o…

Houston-based aerospace company Intuitive Machines produced the first private mission to land on the moon. The Odysseus lander is just 300 km from the lunar south pole, investigating water ice and demonstrating the capabilities of NASA’s Commercial Lunar Payload Services program (CLPS). But space is difficult and not many projects go perfectly firs…

So we pollute the upper atmosphere with rocket exhaust, is it worth the benefits of communications satellites and GPS? What about space junk? the garbage of earth orbit. Or mining asteroids? who owns the asteroids, can should they be able to sell the minerals asteroids provide? These are questions that would never have been asked before space trave…

Apollo 8 orbited the Moon in December 1968, seven months before the first moon landing. Even though Apollo 8 never landed on the Moon, it did produce one of the most iconic photographs of the Apollo program, the Earthrise photograph. Astronaut Bill Anders snapped a colour picture of the Earth rising over the lunar horizon as the capsule orbited the…

In the news lately, you might have seen reports that the rings of Saturn are going to disappear from view. What could make that happen? And will they come back? Let’s check out what’s going on with the most spectacular feature in our solar system. Follow Cosmic Coffee Time on X for some special content x.com/CosmicCoffTime You can request a topic f…

Photographing the night sky is a completely different technique to photographing almost anything else. There's hardly any light, the objects are tiny and they move! It's really difficult. We've all given it a go and been disappointed, but how do they get the incredible pictures we see on the internet and on TV, and how can normal spacefans like us …

India’s Chandrayaan-3 spacecraft, with the Vikram lander and Pragyan rover have landed in the south polar region of the moon. Some craters in this region are permanently shaded from the blazing sun and can have water ice at the base of these lunar craters. India became only the fourth nation to successfully soft-land a spacecraft on the moon, and t…

Cosmic Coffee Time’s resident space rock expert and NASA mission scientist Greg Brennecka is back again to preview the return to Earth of NASA’s incredible OSIRIS-REx mission. OSIRIS-REx is coming to the end of an epic seven year journey to collect a rock and soil sample from asteroid Bennu. Greg is a mission scientist on OSIRIS-REx and will be doi…

Around 80% of the human made objects in orbit are mission left overs. Some of it is real junk, but some of it has an incredible story to tell. What relics from the early space age are held in safe storage in orbit? How does the accumulation of space junk affect mission planning, and how are we going to keep space safer from impacts in the future? Y…

Around the 21st of June every year is the June solstice. We might know that it’s the longest or shortest day of the year – depending on which hemisphere you’re in, but why does that happen? And we know of the Tropic of Cancer and the Tropic of Capricorn, but how does the solstice define them? Same with the Arctic and Antarctic circles. Does it fall…

Ask an eastern Australian about the Southern Aurora, and they might think you’re talking about the old overnight express train between Sydney and Melbourne. But! The train was named after the spectacular light show in the southern sky. The Aurora Australis to use the phenomenon’s correct name, and its northern equivalent the Aurora Borealis or Nort…

In 2021, NASA announced the VERITAS mission to Venus, NASA’s first voyage to Earth’s twin planet since the early 90’s. Things haven’t gone completely to plan for this project, but one thing VERITAS has already accomplished, it got scientists reviewing data from previous missions, and what they found was truly incredible. And all without leaving the…

Our favourite space rock expert Greg Brennecka joins us to talk about the amazing Hayabusa2 mission, the sample return mission to asteroid Ryugu by Japanese space agency JAXA. Greg and his colleagues have been analysing the sample and some of the findings are incredible. What does Ryugu tell us about the early solar system? What do we learn about w…

Recently, we took a look at GPS and the space science that makes it work. This time, we're going back to an era when navigators had nothing but their equipment and the stars to tell them where they were, even on the open ocean. Celestial navigation combined the sextant, almanac and chronometer to make a reliable navigation system that just needed o…

In 1978, NASA changed the rules around who could be selected as an astronaut. Civilian engineers, doctors and scientists could be selected to fly on the then brand new space shuttle. Meredith Bagby joins us to talk about this group, whose social backgrounds were as diverse as their professions. For the first time, the group included women and peopl…

We all love GPS. The Global Positioning System helps us navigate across country and across town, and it also shows us where our rideshare car is, or how far away our food delivery driver is. Take a look at what space science makes it work, and why it can still provide your coordinates even if you're miles away from any phone or data signal or Wi-Fi…

Friend of Cosmic Coffee Time and expert meteoriticist Greg Brennecka returns to talk about the breathtaking detection of a new meteorite impact on Mars. Greg tells us how the impact was detected, and then confirmed with detailed imagery from Mars orbit. What does this tell us about the subsurface geology of Mars, and what does it mean for astrobiol…

Caroline Herschel is probably best known as the sister of William Herschel, the person credited with the discovery of planet Uranus, but there's a lot more to her than this. Caroline was a great astronomer in her own right, having made numerous discoveries using telescopes she helped make herself. She was also an outstanding musician and was the fi…

For a long time we speculated that there might have been earthquakes on the moon, we call them moonquakes. How did we eventually detect them, and what makes them so different from earthquakes? Let's take a look and figure out what's going on there. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCoffTime You can requ…

Expert meteoriticist and friend of Cosmic Coffee Time Greg Brennecka returns to talk about an exciting development in the meteorite impact scene, the Nadir crater. This newly discovered undersea structure off the coast of Guinea in western Africa is a proposed meteorite impact site. How was this discovered? when did the impact happen and how do we …

NASA is planning to fly a drone in the atmosphere of the second largest natural satellite in the solar system, Saturn's Titan. What is that drone going to look like, how is it going to get there and what sort of science is it going to do when it gets there? It's an audacious project, and we take a look here. Follow Cosmic Coffee Time on Twitter for…

Scientists have long held a theory that there was a black hole in the centre of our milky way galaxy. This was proved some years ago but we've finally got an image of it from real observational data. It's a fascinating story. Let's take a closer look. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCoffTime You can r…

Sunspots are darker and cooler areas on the surface of the sun. What causes them? How long do they last? And how do they fit into the 11 year cycle of solar activity? Let's take a look. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCoffTime You can request a topic for the show! Or even just say hi! We'd love to hea…

You might have heard of pulsars. They're objects that emit regular pulses of radiation. But what are they, how do they form, and what makes them pulse? Let's take a look. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCoffTime You can request a topic for the show! Or even just say hi! We'd love to hear from you. Ema…

Galileo Galilei Made some incredible observations of the moon and was a real pioneer in calculating the height of some of the moon's geological features. In 1610 he turned the world of planetary astronomy on its head. He described the phases of Venus, came agonisingly close to discovering the true nature of Saturn's rings, and studied what became t…

As many as 80% of the stars we see in the night sky could be part of a binary system, two or more stars orbiting each other. So what it a binary system and how can we observe them? We know single stars like our own sun can have a system of planets, but what does that look like for stars in a binary system. Let's take a look. Follow Cosmic Coffee Ti…

Until the Apollo moon landings, our only samples of material from space were in the form of meteorites. These meteorites gave us an insight into the origins of our solar system, and might even have provided the complex organic molecules that allowed life to develop on our planet. In this episode we have an awesome chat with noted meteoriticist Greg…

From Mars rovers that were the size of a microwave oven back in the 90s, we now have the Perseverance rover that's the size of a car. And a helicopter. We take a look at the amazing Mars 2020 project that is taking Mars exploration to the next level. It's collecting samples for future return to Earth and the Ingenuity helicopter is flying through t…

There's a strange gap between the orbits of Mars and Jupiter, a gap where Bode's law says we would expect the fifth planet to be. There's no planet there, but there's something else that's just as amazing, it's the asteroid belt. Let's take a look at the four main asteroids and see what makes up the other million identified objects. Follow Cosmic C…

Voyager 1 took the famous photograph the Pale Blue Dot. It's the furthest travelled machine ever made by people. At 23 billion km, it takes nearly a full day for its radio signals to reach us. Voyager 2 toured all of the gas planets in our solar system and remains the only spacecraft to have visited Uranus and Neptune. But it gets even better. Both…

Neptune. Something was perturbing Uranus' orbit, turns out it was the eighth planet, Neptune. Neptune was the first planet to have its existence and position calculated before it was discovered. Let's take a look at Neptune and its major moon Triton. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCoffTime You can re…

Uranus. Stop giggling, is the first planet to be discovered by telescope. The inner planets have always been known about, but Uranus need to wait until the telescope was invented. Let's take a closer look. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCoffTime You can request a topic for the show! Or even just say …

Jupiter is the first of the gas giant planets. Let's take a look at what makes these planets different from the inner planets. It has a fascinating set of moons that help make up the Jovian system, and we find out how it subtle set of planetary rings were discovered. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCo…

How do you keep a chemistry class's attention in the age of smart phones? Explosions, loud noises and passion! That's how Kate the Chemist does it. Dr. Kate Biberdorf is a professor of chemistry at the University of Texas and she's a science entertainer. She amazed Stephen Colbert with the elephant's toothpaste experiment on Late Night, and blasted…

We have a great chat with Earl Swift about NASA's lunar rovers and his new book Across the Airless Wilds. It's a fascinating dive into the last three moon landings and what could be regarded as the pinnacle of human exploration. Earl recounts his time with astronauts Charlie Duke and Dave Scott, and Laszlo Kestay from the United States Geological S…

There's a lot about Mars that is very Earth-like, from the length of a day to the kinds of seasons it has. Being a neighbouring planet, it's no surprise that we talk about sending astronauts to Mars. While we're waiting, let's take a look at some of the super cool spacecraft that have already been to Mars. Follow Cosmic Coffee Time on Twitter for s…

Earth. It's home to every living thing we've ever known, but what if we really take a step back and study our planet the same way we study the others. What everyday events have an astronomical cause. And what about all that water, and all that life! Grab a coffee and join us for a view of our own planet, from outside. Follow Cosmic Coffee Time on T…

Planet Venus is sometimes called Earth's twin. It's the same size and in planetary terms it's close by, but why isn't it our first choice for exploration? Some of the differences make Venus super difficult to study so in a way it remains mysterious. Why is it difficult to study? And what makes the environment on Venus so harsh? Grab a coffee and jo…

We don't get to hear much about planet Mercury. It took us a long time to learn much about it and only two spacecraft have ever been there. Let's take a look at some of the little known but fascinating facts about Mercury's history, why it has the longest day in the solar system and what we've learned from lonely pair of spacecraft that have visite…

So back in the 1930's, astronomers noticed that there didn't seem to be enough mass in galactic clusters to hold them together, but they were held together. There mas be some additional mass and gravity to hold everything together, but where is it? It can't be seen. And this problem produced the theory of dark matter. Follow Cosmic Coffee Time on T…

Join us for a discussion with David W. Brown about his new book The Mission, the true story of NASA's bold Europa Clipper mission and the search for signs of life on Jupiter's icy ocean moon Europa. David tells us about the incredibly diverse team that put this project together, why Europa is the most likely place in the solar system to find signs …

So way back in the 90s, NASA launched the bus-sized Hubble Space Telescope into orbit. But it had a huge problem, it couldn't focus the light from space as well as it should have. What went wrong? And how did NASA fix it, so it could stay in service for thirty years? Follow Cosmic Coffee Time on Twitter for some special content twitter.com/CosmicCo…

Meteors, they're not falling stars, but what are they? Where do these objects come from and why do they 'burn up' in the atmosphere? And what's the difference between a meteor and a meteorite? We also take a quick look at some of the most famous meteor incidents in history. Follow Cosmic Coffee Time on Twitter for some special content twitter.com/C…