Hubble Observations Make For a More Precise Hubble Constant

Hubble Observations Make For a More Precise Hubble Constant

Over the past three decades, astronomers around the world have been using the observations of the Hubble Space Telescope to more precisely calculate the expansion of the universe. And they have converged on a precision of just over 1%. Plus, Boeing launches Starliner, Voyager 1 struggles, and Erik reviews his favorite camera lens.

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Hubble Discovers Star Hidden by Companion’s Supernova

Hubble Discovers Star Hidden by Companion’s Supernova

Data from the Hubble Space Telescope has determined that the newly discovered companion of a star that went supernova had its outer hydrogen layer siphoned off before the explosion. The results support the theory that massive stars generally form and evolve as binary systems. Plus, rocks from space, Crew-4 comes home, searching for life beyond Earth, and another Canon lens review.

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Stellar Death Just Got More Lit

Stellar Death Just Got More Lit

Remember that new object, COW, named for a strange supernova? We’ve seen four more of these Fast Blue Optical Transits, and new research may even have figured out just how and why they occur. Plus, Crew-4 launches, a bunch of planetary science news, micronovae, and this week in rocket history, we look back at the San Marco program.

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New Fossil Data Shows Cascadia’s Dangers

New Fossil Data Shows Cascadia’s Dangers

An analysis of sediment core samples taken at the Salmon River Estuary in Oregon provides evidence that the massive 1700 Cascadia earthquake caused 15 meters of slip along the shoreline, which lead to over a meter of coastal subsidence. Plus, all the rocket launches, a few mission updates, making Mars bricks with urea, and an interview with Maggie Thompson from UC Santa Cruz about using methane as a biosignature.

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Early Bacterial Life May Have Formed Far Earlier Than Thought

Early Bacterial Life May Have Formed Far Earlier Than Thought

An analysis of microscopic features in rocks from the Nuvvuagittuq Supracrustal Belt in Quebec, Canada, which date back between 3.75 and 4.28 billion years, finds evidence of possible microbial life. Plus, a supermassive black hole precursor, temperatures on Neptune, check-ins with various spacecraft, and our weekly What’s Up segment.

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