SignalsMonitor LIVE INTELLIGENCE
TECHNOLOGYQUIET

24 days ago

A strange circle on satellite maps turned out to be a 390-million-year-old impact crater

SIGNALSMONITORTECHNOLOGY

What's happening

SignalsMonitor is following this as a technology story. ScienceDaily Technology and ScienceDaily Top News are the outlets attached to this story. The first report grouped here was at 22 Sept 2026, 10:43 UTC. 2 material updates are listed in the timeline. The headline in use is “A strange circle on satellite maps turned out to be a 390-million-year-old impact crater”. This note is SignalsMonitor's own briefing, not the publisher's article.

What we know

An amateur astronomer searching satellite maps for a Quebec camping spot accidentally discovered a massive ancient impact crater. Scientists later found shatter cones that confirmed the 25-kilometer-wide structure was blasted into Earth roughly 390 million years ago.

ScienceDaily TechnologyRead at ScienceDaily Technology

Story timeline

Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.

Same story, different outlets

2 headlines

Each line is that outlet's headline. The article stays on the publisher's site.