BBC: Although North Korea’s controversial satellite launch last week went off as planned, the satellite itself may not be functioning. According to US astronomer Jonathan McDowell, the satellite does not appear to be transmitting but instead seems to be tumbling in orbit. However, it may be too early to tell, counters Stuart Eves of Surrey Satellite Technology in the UK. He says that any spacecraft can take several days to stabilize. The United Nations Security Council had condemned the launch, claiming it violated two UN resolutions concerning missile tests. Some countries, including the US, South Korea, and Japan, view last week’s event as another step toward North Korea’s ability to launch an intercontinental ballistic missile.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
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