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--- transportation:space [2026/06/14 02:18] – [Parker Solar Probe] timb
+++ transportation:space [2026/06/17 19:55] (current) – [Antenna] timb
@@ Line 4749: / Line 4749: @@
 https://gizmodo.com/nasa-hybrid-antenna-revolution-in-space-communication-1851248214
+== Human Error Caused a $4.1 Million Mishap at NASA’s Deep Space Network ==
+A NASA investigation blamed poor training and procedures for damage to a 70-meter radio frequency antenna.
+Passant Rabie - June 17, 2026, 2:30 pm ET
+NASA officials wrapped up an investigation into an incident that caused significant damage to one of its largest Deep Space Network (DSN) antennas, finding that operators were stretched beyond their usual roles to keep the facility operating.
+The Mishap Investigation Board issued its final report on the incident, blaming software weaknesses, human error, and an undocumented failure for the mishap. The 230-foot-wide radio antenna remains offline while NASA gets to work on its repairs, which the agency estimates will cost somewhere between $4.1 and $4.6 million.
+“We are committed to learning everything we can from this incident, and we’ve already begun putting those lessons into practice,” Kevin Coggins, deputy associate administrator for NASA’s SCaN (Space Communications and Navigation) Program, said in a statement.
+https://gizmodo.com/human-error-caused-a-4-1-million-mishap-at-nasas-deep-space-network-2000772552
@@ Line 6432: / Line 6446: @@
 https://www.tomorrowsworldtoday.com/space/james-webb-telescope-to-confirms-that-the-universe-is-expanding-at-different-speeds/
+== How Serious Is the Universe’s Expansion Problem? ==
+The Hubble tension—a disagreement over the universe's expansion rate—has led to fears of a cosmology crisis, but is it actually that serious?
+Gayoung Lee - June 15, 2026, 7:30 am ET
+With consistent, impressive leaps in observational technology, cosmology keeps running into all kinds of issues. One infamous problem is called the Hubble tension. Namely, the two main ways scientists measure the Hubble constant, which represents the universe’s expansion rate, don’t agree. Whether that’s a scientific skill issue or evidence of some unidentified physics, scientists also don’t agree.
+To be clear, the numerical difference is not that big. The method that uses the cosmic microwave background (CMB), or the leftover radiation from the Big Bang, has the constant at 41 or 42 miles (67 or 68 kilometers) per second per megaparsec (a unit of distance about 3.3 million light-years). The other approach that uses local observations of galaxies and supernova puts it at 45 miles (73 kilometers).
+https://gizmodo.com/how-serious-is-the-universes-expansion-problem-2000770729