Blog about satellites: launches, operations, studies, fall.

The Falcon 9 rocket Blasting off for its SSO-A SmallSat Express mission (Image courtesy SpaceX)

It was morning in California when SpaceX started a new record mission with the launch from the Vandenberg base of a Falcon 9 rocket whose first stage was on its third flight. Everything worked well, including the third controlled landing. In the meantime, the second stage brought a group of 64 small satellites into orbit and within about half an hour they were put into a Sun-synchronous orbit, hence the name SSO-A SmallSat Express mission. For SpaceX it was the 19th mission of the year, passing the 18 completed in 2017.

Artist's illustration of the Cygnus X-1 system (Image NASA/ESA Hubble)

An article published in the journal “Nature Astronomy” describes unprecedented observations of matter around a black hole. A team of researchers used the data detected using an X-ray polarimeter on board the PoGO+ satellite to obtain information on the part of hard X-rays that are reflected from the accretion disk around the black hole of the Cygnus X-1 system and identify the shape of the matter that composes it.