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Новости за 07.08.2024

Image: Doomed star Eta Carinae

Phys.org 

Eta Carinae may be about to explode. But no one knows when—it may be next year, it may be 1 million years from now. Eta Carinae's mass—about 100 times greater than our sun—makes it an excellent candidate for a full blown supernova.

Who is Gwen Walz? Meet the teacher and wife of Harris's VP pick - BBC

Top Stories (uk) - Google News (com) 

  1. Who is Gwen Walz? Meet the teacher and wife of Harris's VP pick  BBC
  2. Tim Walz: from weird to the White House?  The Guardian
  3. Kamala Harris rally at Detroit airport to include Whitmer, top Michigan Democrats  MLive.com
  4. Kamala Harris’s happy blue-collar warrior  Financial Times
  5. Talking Politics USA: Why Kamala Harris chose a 'folksy' former teacher as her running mate  ITVX

Using historical radar data to map changes in urban environments

Phys.org 

Synthetic aperture radar (SAR) is a type of remote sensing from satellites that uses the reflection of radio waves to relay information about the surface of the earth. This reflection, or backscatter, is responsive to physical properties, such as roughness, vertical structure, and moisture. SAR is widely used for different types of mapping and monitoring, but signal interference in urban environments can cause distortions that make SAR data difficult to interpret.