Christmas at Tycho Brahe’s Uraniborg

Today is the birthday of the Danish astronomer Tycho Brahe. He lived from 1546 to 1601, where he died in Prague. He discovered SN1572, which we today know is a supernova, but back then he thought to have discovered a new star. For this reason he published the famous "De Stella Nova" in 1573, which … Continue reading Christmas at Tycho Brahe’s Uraniborg

Will the gigantic star Betelgeuse cause an apocalypse? (Danish only)

I wrote this article together with the Danish astronomer Bertil F. Dorch, who in 2002 proposed that the magnetic activity inside Betelgeuse could lead to observable effects on the surface. Recently, in June 2017, ALMA observed asymmetries in shape and color on the surface of Betelgeuse. Read the popular scientific article on videnskab.dk's website (in … Continue reading Will the gigantic star Betelgeuse cause an apocalypse? (Danish only)