3 Crazy Features Of Neutron Stars

Neutron stars are the origin of the current media wave around GW170817. I would argue that neutron stars are more interesting than black holes simply because they are the densest objects in the Universe, that still obeys out known laws of physics. Whereas thinking too much about black holes and your head explodes.

Gold From A Galaxy Far, Far Away

Monday earlier this week the internet exploded with the news from ESO that two neutron stars merged in the galaxy NGC4993 located 130 million light years away. This was measured on August 17 this year and the discovery was therefore named GW170817, which is short for 'Gravitational Wave on August 17, 2017' as measured by LIGO in USA and Virgo in Europe.

The Golden Merger Of Neutron Stars

Yesterday ESO announced the discovery of gravitational waves and electromagnetic radiation, that originated from a neutron star merger in a galaxy far, far away. Media from all over the world covered the story as it was revealed that some 3,000 scientists had worked for six weeks to decipher the signal, that was received in multiple telescopes and observatories on August 17 this year.

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's website (in [...]

They are 1000 times smaller than SpaceX – but their ambition is just as high

A group of volunteers from Denmark wants to send a human into space in a rocket built by them. Copenhagen Suborbitals is the only group of amateurs in the world with a manned space program. In August this year they will get one step closer to their dream, when they send a rocket 12 km into the air. Read about their sky-high ambitions here.