Keyword: space

Stellar-mass black holes that are part of binary systems sometimes show variable polarization of optical emission. The degree, angle and variability pattern of polarization is characteristic of the physical processes occurring in the vicinity of a black hole. By studying black holes astronomers learn how matter and energy behave under extreme conditions. 
 

Astronomy has traditionally required a fair amount of travelling by researchers, as observatories are located around the world. As the pandemic drove people to rely on remote connections, a research group from the University of Turku adopted a new type of arrangement to observe the skies.

The European Copernicus Programme provides Earth Observation (EO) data free of charge on an open-access basis. The Copernicus services are based on satellite and in situ observations, and cater to even near real-time data needs. The services provide global data which can also be used for local and regional needs. The data can, for example, help to make visible different phenomena affecting Earth, such as climate change and urban development.

An international study led from the University of Turku discovered phosphorus and fluorine in solid dust particles collected from a comet. The finding indicates that all the most important elements necessary for life may have been delivered to the Earth by comets.

Stars over eight times more massive than the Sun end their lives in supernovae explosions. The composition of the star influences what happens during the explosion.