- View more resources from this publisher
European Space Agency (ESA)
Tooltip
These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
ATV – Georges Lemaitres
This video explains how Lemaître theory of the Big Bang explained the measurements made from the early 20th Century until today. The presenter, Anu Ojha, explains how different elements have different spectra because of the changes in energy levels of the electrons in the atoms. Spectroscopy of many nebulae show a redshift, showing that the object is moving away from us. Measurements of this redshift can give a measurement of the speed of recession. This leads on to a measurement of the age of the universe. More recent measurements show that the universe is not only expanding but accelerating. One of the Automated Transfer Vehicles (ATV) is named after Georges Lemaître. ATV is an expendable, pressurised unmanned resupply spacecraft designed to supply the International Space Station (ISS) with propellant, water, air, payloads, and experiments.
Show health and safety information
Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.
Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.
