Dark Matter Galaxies and Artemis Delays: Unraveling the Secrets of the Cosmos

episode

Space News Today not yet transcribed

▲ 0

Transcript

This episode hasn't been transcribed yet Upvotes decide what gets transcribed next — 0 so far. Sign in to upvote

More from Space News Today

From Comet Closures to Space Station Shifts: Your Daily Astronomy Update 10 min · 20 Dec 2025

All episodes from Space News Today →

Report any issue

Source

Recorded24 Feb 2026

Publisherfeed.podbean.com ↗

Handlerec:16070489

Show notes

Sponsor Link: This episode of Spacetime is brought to you with the support of Squarespace...when it's time to get online, it's time to visit Squarespace. Free trial. To find out more visit squarespace.com/spacetime (https://squarespace.com/spacetime) SpaceTime with Stuart Gary Gary - Series 29 Episode 23 In this episode of SpaceTime, we investigate the discovery of a nearly invisible galaxy dominated by dark matter, the latest delays in the Artemis 2 mission to the Moon, and the anticipated launch of Australia's new hypersonic scramjet. A Dark Matter Galaxy Unveiled Astronomers have identified an almost invisible galaxy, catalogued as CDG2, located in the Perseus galaxy cluster approximately 300 million light years away. This galaxy is believed to be composed of about 99% dark matter, making it one of the most dark matter-dominated galaxies ever detected. The findings, published in Astrophysical Research Letters, reveal that dark matter constitutes roughly 80% of the universe's total matter, and CDG2's faint presence was confirmed through observations of its globular clusters using NASA's Hubble Space Telescope and the European Space Agency's Euclid Space Observatory. Artemis 2 Mission Delayed Again NASA has announced another delay for the Artemis 2 mission, which aims to return humans to lunar orbit for the first time in over 50 years. A helium leak discovered in the Space Launch System (SLS) rocket's upper stage has prompted the agency to roll back the launch vehicle to the vehicle assembly building for repairs. This setback eliminates the potential for a March launch, with the next available windows opening in early April. The Artemis 2 mission will carry a crew of four on a 10-day journey to the Moon, including critical system tests and satellite deployments. Australia's Hypersonic Scramjet Launch Imminent An Australian company is set to test its new hypersonic scramjet-powered aircraft, the Dart AE, before the end of the month. This innovative vehicle will utilize a 3D printed Spartan Scramjet engine, designed to operate at speeds exceeding Mach 5 with liquid hydrogen fuel. The mission, codenamed Cassowary Vex, will launch aboard a Rocket Lab electron rocket and aims to validate the scramjet propulsion system under real hypersonic flight conditions while producing zero carbon emissions. www.spacetimewithstuartgary.com (https://www.spacetimewithstuartgary.com/) ✍️ Episode References Astrophysical Research Letters Become a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support (https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support?utm_source=rss&utm_medium=rss&utm_campaign=rss) . Episode link: https://play.headliner.app/episode/31832743?utm_source=youtube

Ask this episode

“What did the council decide on item 42?” — answered with the speaker and the moment.