Contact
Write about the deep sky
Contact Martijn if you find a factual error, want to suggest a scientific source or have a question about a galaxy, nebula, telescope or cosmic distance.
Useful messages include
- the page and paragraph that needs checking;
- a NASA, ESA, ESO or research source;
- a question about an object or observation;
- a suggestion for making an explanation clearer.
Messages are read carefully. A reply may take time when a question requires comparing measurements or mission documentation.