The Volume 126 No. 4 April 2017 Bullen Monthly newsleer of the Astronomical Society of South Australia Inc In this issue: ♦ Vera Rubin - the “mother” of dark maer dies ♦ Astronomical discoveries during ASSA’s second decade ♦ Trappist-1 - 7 Earth-sized planets orbit this dim star ♦ Observing Copeland’s Septet in Leo ♦ Registered by Australia Post Visit us on the web: Bullen of the ASSA Inc 1 April 2017 Print Post Approved PP 100000605 www.assa.org.au In this issue: ASSA Acvies 3-4 Details of general meengs, viewing nights etc History of Astronomy 5-6 ASTRONOMICAL SOCIETY of Astronomical discoveries in ASSA’s second decade SOUTH AUSTRALIA Inc Saying Goodbye 7-8 GPO Box 199, Adelaide SA 5001 Vera Rubin, mother of dark maer dies The Society (ASSA) can be contacted by post to the Astro News 9-10 address above, or by e-mail to
[email protected]. Latest astronomical discoveries and reports Membership of the Society is open to all, with the only prerequisite being an interest in Astronomy. The Sky this month 11-14 Solar System, Comets, Variable Stars, Deep Sky Membership fees are: Full Member $75 ASSA Contact Informaon 15 Concessional Member $60 Subscribe e-Bullen only; discount $20 Members’ Image Gallery 16 Concession informaon and membership brochures can A gallery of members’ astrophotos be obtained from the ASSA web site at: hp://www.assa.org.au or by contacng The Secretary (see contacts page). Member Submissions Sister Society relaonships with: Submissions for inclusion in The Bullen are welcome Orange County Astronomers from all members; submissions may be held over for later edions.