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tkdguy

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Cover story for the July '

22 Scientific American is about the Voyager spacecraft, still operating after more than 40 years. NASA is shutting down more of the instruments to conserve power, but they might keep operating until 2030. The current focus of interest is the magnetometer: Increased plasma and cosmic ray density suggests the Voyagers have passed the "bow shock" of the Solar wind and so hav entered interstellar space, but the magnetic field lines still seem to be radiating from the Sun instead of changing direction as the galactic magnetic field takes over.

 

Also an article about two cosmological puzzles. There are at least two ways each for calculating the Hubble constant and the matter density of the universe. They give different results, and the error bars don't overlap. Such inconsistencies suggest that something important has been missed, or misunderstood.

 

Dean Shomshak

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15 minutes ago, DShomshak said:

Also an article about two cosmological puzzles. There are at least two ways each for calculating the Hubble constant and the matter density of the universe. They give different results, and the error bars don't overlap. Such inconsistencies suggest that something important has been missed, or misunderstood.

Or ... or the Universe is messing with us..

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