In today's episode of Astronomy Daily, we open with an urgent update: Isar Aerospace's Spectrum rocket aborted at T-minus 3 seconds on March 25 — with no new launch date announced. Then: Canada has cancelled its first-ever moon rover mission, ending a years-long effort to put a water-seeking vehicle on the lunar south pole. We unpack the story, the science team's reaction, and what it means for Canada's lunar future with Artemis 2 just days away.

Next, a stunning scientific breakthrough — a mystery dating back to 1866 is finally solved. The XRISM X-ray telescope has revealed that the star Gamma Cassiopeiae's bizarre X-ray emissions come from a hidden white dwarf companion slowly devouring it. Then we explore new research suggesting Neptune's 28-degree tilt was caused not by a primordial collision, but by the gravitational influence of its own captured moon, Triton.

We also mark a major milestone: NASA's Dragonfly rotorcraft — a car-sized nuclear-powered drone destined for Saturn's moon Titan — has officially entered integration and testing at Johns Hopkins APL ahead of its 2028 launch. Russia returns to orbit from Baikonur after last November's structural collapse. And NASA's new SPHEREx telescope delivers an early result, mapping the remnant of Nova Persei 1901 with a bipolar hydrogen shell never seen before.

Hosted by Anna & Avery | Astronomy Daily Podcast | Season 5, Episode 73

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Website: https://astronomydaily.io | Social: @AstroDailyPod

Chapter Timestamps

00:00 - Introduction & Cold Open

01:45 - UPDATE: Isar Aerospace Spectrum Rocket Aborts at T-3 Seconds

05:30 - Story 1: Canada Cancels Its First Moon Rover

13:00 - Story 2: Century-Old Mystery Solved — Gamma Cassiopeiae's X-Ray Secret

20:30 - Story 3: Neptune's Tilt — Did Triton Do It?

26:00 - Story 4: NASA's Dragonfly Titan Drone Begins Integration Testing

33:00 - Story 5: Russia Returns to Orbit from Baikonur

38:30 - Story 6: SPHEREx Maps Nova Persei 1901 Remnant

44:30 - Outro