40 Hours of Observations Finds No Dark Matter in Galaxy AGC 114905

40 Hours of Observations Finds No Dark Matter in Galaxy AGC 114905

Astronomers using the Very Large Array in New Mexico spent 40 hours observing galaxy AGC 114905, which seemed to have little to no dark matter in 2019 observations. The new evidence shows there is no dark matter in the galaxy at all. Plus, more Hubble and JWST updates, an eclipse over Antarctica, and an interview with Dr. Franck Marchis about citizen science.

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Lightweight Mars-sized Planet Found in TESS Data

Lightweight Mars-sized Planet Found in TESS Data

A Mars-sized planet was found just 31 light-years away, orbiting its star every eight hours and having 55 percent the mass of the Earth, leading scientists to conclude it’s mostly made of an iron-nickel core. Plus, water on Earth, a huge comet, and a review of a Canon lens.

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Earth’s Orbital Changes Possibly Influenced Biologic Evolution

Earth’s Orbital Changes Possibly Influenced Biologic Evolution

An analysis of over nine million samples of coccoliths whose ages span several million years has led scientists to conclude that changes in Earth’s orbit may have influenced changes in the size and shape of the microscopic algae. Plus, Europe contemplates geologic threats, and a comet is in this week’s What’s Up.

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Rocket Roundup for December 1, 2021

Rocket Roundup for December 1, 2021

During this jam-packed episode of Rocket Roundup, we cover several Chinese launches, SpaceX’s launch of NASA’s DART mission to hit an asteroid, and Russia’s launch of a military satellite. Plus, this week in rocket history, we look back at Pioneer 10’s encounter with Jupiter.

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ALMA Data Helps Confirm Mechanism Behind Gas Stripping of Galaxies

ALMA Data Helps Confirm Mechanism Behind Gas Stripping of Galaxies

A new research project called the Virgo Environment Traced in Carbon Monoxide Survey (VERTICO) used data collected by the Atacama Large Millimeter/submillimeter Array (ALMA) to understand just what is stripping star-forming gases out of the Virgo Cluster of galaxies. Plus, calderas, a mass extinction, and this week’s What’s Up.

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Rocket Roundup for November 17, 2021

Rocket Roundup for November 17, 2021

On this week’s Rocket Roundup, SpaceX launches NASA astronauts and more Starlink satellites, and Arianespace launches military satellites for France. Plus, this week in rocket history we look back at the only launch of the Soviet Space Shuttle, Buran.

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