About this episode

The episode discusses the detection of a hydrogen signal from billions of light years away and reviews recent developments in space exploration.

Anna and Avery open the Weekend Wrap with a genuine first: South Africa's MeerKAT has detected the 21-centimetre hydrogen signal from four to five billion light years away using radio data alone — no optical galaxy survey propping it up — proving out the technique the Square Kilometre Array will use to measure dark energy. Then the week in review: Roman's coronagraph wakes up, Starship Flight 14 gets a date, Mars turns out to be lopsided inside, BepiColombo lets go, LZ's one unexplained flash, and a centaur caught in the act of becoming a comet. Plus the sky for the week ahead, both hemispheres. Links & sources · University of Manchester — Astronomers use MeerKAT to directly detect faint hydrogen signal from the distant Universe — https://www.manchester.ac.uk/about/news/astronomers-use-meerkat-to-directly-detect-faint-hydrogen-signal-from-the-distant-universe · The Astrophysical Journal Letters — Paul, Wolz, Santos, Chen et al. (paper DOI) — https://doi.org/10.3847/2041-8213/ae808f · American Astronomical Society — release listing — https://aas.org/node/730547 · Phys.org — MeerKAT directly detects faint hydrogen signal from the distant universe —…

People in this episode

Hosts: Anna, Avery

Topics covered

• hydrogen signal
• radio telescope
• dark energy
• astronomy
• space exploration
• week in review

Keywords

• hydrogen map
• MeerKAT
• radio data
• dark energy
• astronomy news
• space exploration
• Mars
• BepiColombo
• comet

Mentioned in this episode

Organizations: South Africa's MeerKAT, Square Kilometre Array, University of Manchester, American Astronomical Society, Phys.org, Space.com, Xinhua

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