mrt 092013
 
The Universe Accurately Measured

  New results pin down the distance to the galaxy next door   After nearly a decade of careful observations an international team of astronomers has measured the distance to our neighbouring galaxy, the Large Magellanic Cloud, more accurately than ever before. This new measurement also improves our knowledge of the rate of expansion of [continue reading]

jun 032012
 
Two Stars with One Orbiting Planet: New Measurements

  A team of Penn State University astronomers has obtained very precise measurements of a pair of stars that are orbited by a planet. The orbits of the stars and planet in the system, named Kepler-16, are aligned so that they eclipse or transit each other when observed from Earth. These new measurements will aid [continue reading]

mei 162012
 
Ancient Egyptian Astronomers Observed A Variable Star

  The study of the ‘Demon star’, Algol, made by a research group of the University of Helsinki, Finland, has received both scientific and public attention. The period of the brightness variation of this eclipsing binary star has been connected to good prognoses three millennia ago. Papyrus Museum, Cairo, Egypt. The oldest Egyptian calendar. The [continue reading]