video-scienza

Space Station 20th: longest continuous timelapse from space

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Since the very first module Zarya launched from Baikonur Cosmodrome on 20 November 1998, the International Space Station has delivered a whole new perspective on this planet we call home. Join us as we celebrate 20 years of international collaboration and research for the benefit of Earth with ESA astronaut Alexander Gerst’s longest timelapse yet.

In just under 15 minutes, this clip takes you from Tunisia across Beijing and through Australia in two trips around the world. You can follow the Station’s location using the map at the top right-hand-side of the screen alongside annotations on the photos themselves.

This timelapse comprises approximately 21 375 images of Earth all captured by Alexander from the International Space Station and shown 12.5 times faster than actual speed. […]

 

Betelgeuse’s Size

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I’d been hearing a lot about Betelgeuse lately, and I hadn’t realised how immensely huge it is. So I decided to make this short video which shows the size of Betelgeuse as compared to our Sun and the Solar System. I know VY Canis Majoris is bigger (actually even larger stars have been discovered), but this video isn’t about the largest star; I made it because Betelgeuse specifically was in the news.

3 component Seismograms

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Modern seismometers include 3 elements to determine the simultaneous movement in 3 directions: up-down, north-south,and east-west. Each direction of movement gives information about the earthquake. This animation shows both the movement of the three basic waves (P, S, and surface) and the effect of the waves on a building. The three seismograms produced by a modern seismograph station show that the P wave is more visible on the vertical component and the S wave amplitude is larger on the horizontal components.[…]

New Simulation Creates “Pulsar in a Box”

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Scientists studying what amounts to a computer-simulated “pulsar in a box” are gaining a more detailed understanding of the complex, high-energy environment around spinning neutron stars, also called pulsars. The model traces the paths of charged particles in magnetic and electric fields near the neutron star, revealing behaviors that may help explain how pulsars emit gamma-ray and radio pulses with ultraprecise timing.[…]

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