Episodes

Today's episode — S05E180, Saturday August 29, 2026, The Weekend Wrap: Main story: The Nancy Grace Roman Space Telescope launches tomorrow, Sunday August 30, with a primary window opening 7:26am EDT (11:26 UTC / 9:26pm AEST Sunday night in Sydney) on a SpaceX Falcon Heavy from LC-39A, Kennedy Space Center; backup window Monday August 31 at 7:22am EDT. Total ascent to spacecraft deployment is about 31 minutes 31 seconds, with Falcon Heavy's side boosters landing back at Cape Canaveral roughly 7 m...

Today's episode — S05E179 , Friday August 28, 2026: Feature story: US startup Reflect Orbital has FCC approval for Eärendil-1, a demonstration satellite carrying a 60-foot mirror, the first step toward a planned constellation of 50,000-plus orbital mirrors beaming reflected sunlight to Earth on demand. A new peer-reviewed study (Kocifaj, Bakos and Kundracik, accepted at The Astrophysical Journal Letters) finds a full-scale, 174-foot operational mirror would appear about 40 times brighter than th...

SpaceTime Series 29 Episode 103 *Warnings that some Earth microbes could contaminate the Moon NASA says some of Earth's microbes hitching a ride to space with human explorers could survive in the shaded nooks and crannies of the Moon's South Pole contaminating the otherwise pristine environment. *China’s first reusable rocket China has finally landed a reusable rocket in one piece. *Russia develops a nuclear rocket motor Russia has developed a prototype nuclear plasma engine which could cut jour...

Space Nuts: Moon impact, Roman Observatory launch, and Neptune’s odd moons Andrew Dunkley is joined by Professor Jonti Horner, Professor of Astrophysics at the University of Southern Queensland, for a wide-ranging astronomy update. They cover SpaceX’s out-of-control rocket body hitting the Moon, the imminent launch of the Nancy Grace Roman Observatory, and a new result that may explain the strange origin of some of Neptune’s moons. We discuss why lunar impacts matter far beyond the Moon itself...

Today's episode — S05E178, Thursday August 27, 2026: Feature story: Physicists at Lawrence Livermore National Laboratory, led by Marius Millot, used the Omega Laser Facility at the University of Rochester to shock-compress diamond samples to about 1 terapascal — roughly three times Earth's core pressure — and temperatures hotter than the Sun's surface, recreating conditions found deep inside Neptune and Uranus. The results resolve a 20-year, ~1,000-degree disagreement between lab measurements a...

Today's episode — S05E177, Wednesday August 26, 2026: Feature story: Astronomers using the ALMA array in Chile, led by Bill Dent (European Southern Observatory), have released the most detailed picture yet of the actual surface of Betelgeuse, the red supergiant marking Orion's shoulder — a corrugated, irregular surface with bright convective hot spots, some nearly 1,000°F hotter than the surrounding plasma. One hot spot in the northeastern region has persisted for more than seven years, far lon...

SpaceTime Series 29 Episode 102 *SpaceX’s Starship arrives at Christmas Island After some 24 days at sea, a SpaceX recovery team has successfully towed its test flight 13 Starship into the remote Australian Indian Ocean territory of Christmas Island. The unplanned operation was hastily put together after the spacecraft unexpectedly held together following its splashdown off the Western Australian coast. *How old really is the universe? Astronomers have come up with a new way to work out the age ...

Today's episode — S05E176, Tuesday August 25, 2026: Feature story: NASA's Roman Space Telescope is fully encapsulated inside its Falcon Heavy fairing and cleared to launch no earlier than 7:26 a.m. ET this Sunday, August 30 — about nine months ahead of its original schedule, a rarity for a NASA flagship mission. Roman is headed to Sun-Earth L2 for a five-year mission mapping dark energy and dark matter and hunting exoplanets with a starlight-cancelling coronagraph. Its wide-field camera surveys...

SpaceTime Series 29 Episode 101 *NASA scraps its Swift rescue mission NASA has been forced to abandon its planned rescue mission to save the Swift Gamma Ray Space Telescope. *The Milky Way’s first big galactic collision Astronomers have discovered what was probably the first major galactic collision involving our home galaxy the Milky Way cannibalising a dwarf galaxy less than two billion years after the big bang. *Understanding the stuff atoms are made of New observations by the world’s largest...

Today's episode — S05E175, Monday August 24, 2026: Main story: China delays Chang'e-7's launch by about a month. The Chang'e-7 lunar south pole mission's launch window opened today, August 24, but a tropical system (reported as Tropical Depression/Storm Narra) over the Gulf of Tonkin, alongside a cited safety and reliability review, forced a scrub with no immediate new date. Because the mission's landing site — the rim of Shackleton Crater — requires specific solar illumination geometry on top ...

Sponsor Link: This episode of Space Nuts is brought to you with the support of NordVPN (https://www.nordvpn.com/spacenuts) . Protect your online activities with a special deal at In this Q&A episode of Space Nuts , hosts Andrew Dunkley and Professor Jonti Horner tackle a variety of fascinating questions from listeners. From the intriguing phenomenon of planetary atmospheres that may rain diamonds and sapphires, to the complexities of satellite approvals and the possibility of planets forming w...

Anna and Avery cover China's Chang'e-7 mission — a four-vehicle lunar south pole expedition, including a leaping hopper robot, that a Brown University scientist calls the most ambitious robotic Moon mission any nation has ever attempted, with its launch window opening Monday. Then: this week's biggest hardware stories, catching up on Starship's Ship 40 (still marooned off Christmas Island), LandSpace's historic private rocket landing in China, NASA pinpointing exactly where a Falcon 9 hit the Mo...

Anna and Avery cover how NASA, working with South Korea's Danuri orbiter, pinpointed and imaged the exact crater left by a SpaceX Falcon 9 stage that struck the Moon on August 5th. Plus: the private rescue mission for NASA's ailing Swift telescope has officially failed, astronomers may have caught dark matter bending a black hole's jet, and Rocket Lab launches its ninth radar satellite for Japan's iQPS. Full show notes: Today's episode — S05E173, Friday August 21, 2026: Main story: NASA finds th...

SpaceTime Series 29 Episode 100 The ingredients for planets formed far earlier than thought A new study suggests that the basic ingredients needed to form planets - and possibly life - may have existed just a hundred million years after the big bang -- far earlier in the history of the Universe than previously thought. Hunting for the hypothetical axion For years scientists have been hunting for a hypothetical elementary particle called the AXION which could lead to new physics unlocking some of...

Anna and Avery cover LandSpace becoming the first Chinese commercial company to land an orbital-class rocket booster — a big step for the country's private space sector. Plus: astronomers find a "mega-Earth" 23 times more massive than our planet that shouldn't be able to exist, a star weaving impossibly close to our galaxy's supermassive black hole that could reveal its spin within a decade, and new JWST data showing the early universe's galaxies were hiding roughly four times more mass than we ...

Sponsor Link: This episode of Space Nuts is brought to you with the support of NordVPN (https://www.nordvpn.com/spacenuts) . Secure your online presence and enjoy a special deal at www.nordvpn.com/spacenuts (https://www.nordvpn.com/spacenuts) . Asteroid or comet, dinosaur impact firestorms, crater discovery, and Q&A on exoplanets and satellites Andrew Dunkley is joined by Professor Jonti Horner of the University of Southern Queensland for two tightly related Space Nuts conversations. The firs...

Anna and Avery cover Sophie Adenot becoming the first French woman ever to conduct a spacewalk — a historic EVA that ran into some antenna trouble along the way. Plus: a trillion-mile river of gas that explains why some planetary systems end up tilted, an honest update on Starship's Ship 40 as it turns out the recovery saga wasn't quite finished, and SpaceX quietly closing in on 11,000 satellites in orbit. Full show notes: Today's episode — S05E171, Wednesday August 19, 2026: Main story: Firs...

SpaceTime Series 29 Episode 99 Discovery of black hole stars at the cosmic dawn Astronomers have suggested mysterious objects from the dawn of time known as little red dots may represent an entirely new type of cosmic phenomenon which they’re calling black hole stars. Claims Mars could have had liquid water less than a billion years ago A new study claims Mars may have had liquid water flowing across its surface as recently as 757 million years ago, far more recent than the several billion years...

Anna and Avery close out a three-week saga: SpaceX has recovered Starship's Ship 40 from the Indian Ocean after a soft splashdown, a difficult tow, and a moment where recovery odds looked as low as 18%. Plus: a dead star in the Helix Nebula previews our own Sun's five-billion-years-from-now fate, new evidence the Milky Way was built in part by an ancient galactic collision, and China's fast recovery from a rocket failure with back-to-back launches. Full show notes: Today's episode — S05E170, T...

SpaceTime Series 29 Episode 98 Three supermassive black holes discovered in a single galaxy for the first time Astronomers have for the first time, discovered a galaxy near the dawn of time containing three monster black holes. A new White House advisory body on UFOs The pentagon has just released its latest batch of X-files looking at unexplained phenomena and strange happenings. The release follows the appointment of Harvard University astrophysicist Avi Loeb as chair of the new White House sc...

Anna and Avery cover NASA's newly funded concept for spherical, propeller-free "aerobots" that could one day explore the methane-carved cave systems of Saturn's moon Titan. Plus: SpaceX breaks its own launch-turnaround record with two Falcon 9 missions 38 minutes apart, Rocket Lab lands its biggest-ever defense contract to build "Flatellites" for the U.S. Space Force, and a geomagnetic storm arriving today could bring aurora to high latitudes tonight. **Full show notes:** Today's episode — S05...

Sponsor Link: This Q&A episode of Space Nuts is brought to you with the support of NordVPN (https://www.nordvpn.com/spacenuts) . When you decide to get serius about your security online, do what we did and get NordVPN . We have a special deal for you too, chck out the details at www.nordvpn.com/spacenuts (https://www.nordvpn.com/spacenuts) In this episode of Space Nuts, hosts Andrew Dunkley and Professor Fred Watson delve into a captivating Q&A session, tackling a range of intriguing questions...

Today's episode — S05E168, Saturday August 15, 2026, our "Weekend Wrap": **Main story: a magnetar confirms 90-year-old vacuum birefringence prediction.** A team led by Rachael Stewart (George Washington University), using NASA's IXPE spacecraft, found the strongest evidence yet that extreme magnetic fields polarize light passing through empty space — confirming a 1936 prediction by Werner Heisenberg and Hans Euler. The team studied magnetar 1E 1547-5408 and found X-rays nearly 3x more polarized...

Anna and Avery break down JWST's discovery of MoM-BH*-1, the earliest known "black hole star" — a black hole shrouded in dense gas, glowing from just 660 million years after the Big Bang, that might explain how supermassive black holes grow so fast. Plus: the Perseid meteor shower's spectacular overnight peak, a new satellite built to watch other satellites in geostationary orbit, and veteran NASA astronaut Mike Fincke's retirement after 30 years and four spacecraft. **Full show notes:** Today...