Viral bounces, James Webb telescope and Voyager 1 probe

The scientific news of September 1, 2022 is:

In Health: Covid-19: viral rebounds, a more frequent phenomenon than expected.

  • Testing positive for Covid again after being negative, or showing symptoms again a few days after they disappeared wouldn’t be that rare.
  • The researchers showed that these viral rebounds affected 12% of patients (about 1 in 8) out of a cohort of 200 patients.
  • In the study, 27% of participants also saw their symptoms worsen after observing a decrease in their severity (about 1 in 4 participants).

In Universe: A sumptuous spiral galaxy in the eye of the James Webb telescope.

  • The James Webb Space Telescope has captured new details of a so-called Phantom galaxy in a dramatic image showing its spiral shape.
  • The galaxy had already been observed by the legendary Hubble Space Telescope, launched in 1990 and still in operation.
  • An engineering gem worth $10 billion, the James Webb Telescope conducts its observations 1.5 million kilometers from Earth.

In the Milky Way: Voyager 1: repaired, the probe continues its mission beyond the solar system.

  • The machine furthest from Earth had been encountering some technical problems since May 2022, but the cause of the damage has finally been identified and corrected.
  • AACS began passing telemetry data through an on-board computer known to have stopped working properly years ago.
  • The Voyager 1 and Voyager 2 probes were launched in 1977, and both now sail outside one of the limits of the solar system.

In Nature and Environment: Germany: the pollution of the Oder is not a natural disaster. It is of human origin.

  • The spillage of a highly concentrated saline solution is probably the cause of the proliferation of the micro-algae which would have suffocated hundreds of thousands of fish.
  • Among the first victims are the Baltic sturgeon farms (Acipenser oxyrinchus), one of the most endangered species in the world.
  • In all, summarizes the weekly Zeitfor the moment nearly 400 tons of corpses have been recovered on the German and Polish sides.

In Transport: Californians ordered not to recharge their electric cars because of the heat.

  • Californians were ordered not to charge their electric cars this Wednesday, 1st, so as not to further burden an aging electricity grid.
  • California authorities want new cars to “zero emissions” polluting from 2035 at the latest.
  • The three main recommended measures: set the thermostat to 25°C or more, avoid using large appliances and charging electric vehicles, and turning off unnecessary lights.

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