ScienceCasts: Hubble’s Umstrittene Konstante

Es gibt zwei führende Methoden, um die Wachstumsrate des Universums zu messen, und für fünfzehn Jahre, stimmten sie auch mehr oder weniger miteinander überein. Jedoch tun sie das nicht mehr, und das ist eine große Sache. Besuche http://science.nasa.gov/ um mehr zu erfahren. Hier klicken um mehr Videos zu sehen: https://alugha.com/NASA

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ScienceCasts: Escape of the Destructive Electrons

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Click here to see more videos: https://alugha.com/NASA Visit http://science.nasa.gov/ for more. On the evening of March 18 (2018), step outside for a view of the crescent Moon, Venus, and Mercury together above the twilight horizon.

Measuring Distance in the Solar System | NASA Planetary Sciences

Explore how astronomers and scientists use astronomical units to measure distances in the solar system in this video adapted from NASA. The astronomical unit (au) -- equal to the average distance from Earth to the Sun -- is a convenient unit of measure when talking about distances in the solar syste