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--- transportation:space [2026/05/28 23:15] – [Black Hole] timb
+++ transportation:space [2026/06/17 19:55] (current) – [Antenna] timb
@@ Line 1523: / Line 1523: @@
 https://gizmodo.com/a-paradigm-shift-supermassive-black-hole-without-a-galaxy-changes-what-we-thought-came-first-2000764626
+== Massive Void Near Milky Way’s Black Hole Could Solve a 50-Year Mystery ==
+“There it is. There is the thing that everybody’s been looking for for 50 years.”
+Gayoung Lee - June 5, 2026, 11:55 am ET
+Theoretically speaking, black holes should breathe stuff out as they suck stuff in. But for 50 years, astronomers weren’t able to confirm this was true for the supermassive black hole in our own galaxy—until now.
+In a study published yesterday in The Astrophysical Journal Letters, astrophysicists at Northwestern University presented potential evidence of a giant, cone-shaped hole in the cold gas surrounding Sagittarius A*, the supermassive black hole at the center of the Milky Way. When the team calculated how much energy was required to create this cavity, they found there had to be some input from the black hole—something like a powerful wind or jet. To arrive at these conclusions, the team compiled five years’ worth of observations by the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile.
+“Unless a black hole exists in a perfect vacuum, it must blow a wind somehow,” study co-lead author Mark Gorski said in a statement. “With new observations, this is the first time we’ve had a clean enough view to see the wind’s imprint. We looked at the data and said, ‘There it is. There is the thing that everybody’s been looking for for 50 years.’”
+https://gizmodo.com/massive-void-near-milky-ways-black-hole-could-solve-a-50-year-mystery-2000768086
@@ Line 4354: / Line 4367: @@
 https://gizmodo.com/rare-earthgrazer-meteor-flew-186-miles-over-3-states-1848046040
+== Rare Meteorite May Be Evidence of a Lost Planet That Never Fully Formed ==
+Seemingly unassuming meteorites hold invaluable information about the solar system's earliest stages.
+Gayoung Lee - June 4, 2026, 4:30 pm ET
+Meteorite fragments land across every corner of Earth. But among the roughly 80,000 meteorites discovered so far, only a handful are known as angrites—and at least one of them might be the remnant of a long-lost protoplanet in our solar system, a new study suggests.
+Researchers studying NWA 12774, an angrite retrieved in the Sahara Desert, noticed that the pressures required to form the fragment’s chemical structure could not have existed inside smaller asteroids. What’s more, the sharp, delicate crystals inside the angrite indicate that it was born at relatively shallow depths. In a recent paper published in Earth and Planetary Science Letters, the team presented an unexpected possibility—did the angrite once belong to a long-lost planetary embryo in our solar system?
+“Meteorites are essentially a library of information about the formation and evolution of the early solar system,” Aaron S. Bell, the study’s first author and an earth scientist at the University of Colorado Boulder, told Gizmodo. “Angrites, in particular, preserve a record of processes that occurred at the very beginning of planetary formation.”
+https://gizmodo.com/rare-meteorite-may-be-evidence-of-a-lost-planet-that-never-fully-formed-2000767623
@@ Line 4721: / 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 6404: / 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
@@ Line 9414: / Line 9467: @@
+==== Water ====
+== A Single Asteroid Strike May Have Delivered All of Mercury’s Water, Study Finds ==
+Despite being the closest planet to the Sun, Mercury hosts water ice at its poles. Now scientists may know how it got there.
+Passant Rabie - May 29, 2026, 1:30 pm ET
+In 2012, a NASA probe confirmed something rather unexpected about Mercury. The scorching hot planet has deposits of water ice stashed in permanently shadowed areas. Exactly how the water got there, however, has remained a mystery. Now, a team of scientists has traced Mercury’s frozen water to a colossal impact that transformed the planet in a single Mercurian day.
+A new study, published in the Journal of Geophysical Research: Planets, suggests a massive impact by a comet or asteroid deposited all of Mercury’s water in one go. The team of researchers behind the study simulated the event and found that the planet’s thick deposits of water ice were likely accumulated over a single day on Mercury (the equivalent of 157 Earth days) in both the north and south polar regions.
+https://gizmodo.com/a-single-asteroid-strike-may-have-delivered-all-of-mercurys-water-new-study-finds-2000764992
 ===== Moon (General) =====
@@ Line 11841: / Line 11907: @@
 https://www.engadget.com/science/space/parker-solar-probe-survived-its-close-approach-to-the-sun-and-will-make-two-more-in-2025-180350510.html
+== Parker Solar Probe makes another flyby of the sun, solar energy bags a win, and more science stories ==
+Cheyenne MacDonald - June 13, 2026 9:30 am EST
+NASA this week announced the four-person crew that will lead its Artemis III mission in 2027: NASA astronauts Andre Douglas, Frank Rubio and Randy Bresnik along with ESA's Luca Parmitano as the flight's pilot. Plus, the Parker Solar Probe took another trip around the sun, solar energy overtook coal in May, and more. Here's this week's science news.
+Parker Solar Probe's 28th flyby
+NASA's Parker Solar Probe made another close pass around the sun this week, getting 3.8 million miles from the surface and reaching a speed of 430,000 mph. This marked its 28th flyby, and matched the speed and distance records the probe first set back in December 2024. It's hit those numbers five times since. The spacecraft began its latest approach on June 3, and transmitted a beacon tone on Thursday to signal to the team that all is well.
+The Parker Solar Probe has been studying our star for eight years, incrementally getting closer and closer to the surface. It launched in 2018 and made its first close approach to the sun that fall, when it came within 15 million miles of the sun's surface. For its first flyby, it reached a maximum speed of 213,200 mph. Despite the harsh conditions in the sun's vicinity — the heat shield reaches an estimated 1,700 degrees F when the spacecraft is closest to the sun — the Parker team says the probe still appears to be doing well after all this time. Below the heat shield, the Parker probe is protected by thermal blankets which have kept the temperature of the spacecraft itself consistent during these flybys.
+"That temperature consistency is a major indicator of spacecraft health," said John Wirzburger, Parker Solar Probe mission systems engineer at the Johns Hopkins Applied Physics Laboratory. "It tells us the heat shield isn't degrading. If it were cracking or weakening, we'd see temperatures drift upward as more heat leaked through."
+Read More: https://www.engadget.com/2193686/parker-solar-probe-makes-another-flyby-of-the-sun-solar-energy-bags-a-win-science-news/