Familjen tog en promenad i Svankälla Våtmarkspark. Solen sken lite blekt och det var kyligt i vinden men annars fint. Vårfåglarna har inte kommit fram ännu. Det jag hittade var en duva men det får duga.
Just as avalanches on snowy mountains start with the movement of a small quantity of snow, the ESA-led Solar Orbiter spacecraft has discovered that a solar flare is triggered by initially weak disturbances that quickly become more violent. This rapidly evolving process creates a ‘sky’ of raining plasma blobs that continue to fall even after […]
To land on the right foot on the Red Planet, European engineers have been dropping a skeleton of the four-legged ExoMars descent module at various speeds and heights on simulated martian surfaces.