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The Authors
Oli Usher
Oli is a London-based science writer, who works as the communications manager for the
Faculty of Mathematical and Physical Sciences at University College London. He is responsible
for bringing the work of the university’s scientists to the public, covering the fields of
astrophysics, space science and planetary sciences among others.
He studied history and philosophy of science at UCL and the University of Cambridge, UK,
before working as a journalist and science communicator for a range of organizations and
publications including ESO, ESA, the Guardian and Europlanet. Until 2013, he was the public
information officer for ESA’s part of the Hubble Space Telescope, writing about Hubble’s latest
discoveries and bringing Hubble science to the general public.
Lars Lindberg Christensen
Lars is a science communication specialist heading the ESO education and Public Outreach
Department in Munich, Germany. He is responsible for public outreach and education for ESO’s
telescopes, for ESO's part of ALMA, for ESA’s part of the Hubble Space Telescope and for the
International Astronomical Union Press Office.
He obtained his Master’s degree in physics and astronomy from the University of Copenhagen,
Denmark. Before assuming his current position, he spent a decade working as a science
communicator and technical specialist for the Tycho Brahe Planetarium in Copenhagen.
Lars has more than 100 publications to his credit, most of them in popular science
communication and in its theory. He is the author of a dozen books translated into Finnish,
Portuguese, Korean, Slovenian, Japanese, Danish, German and Chinese.
He has produced material for many different media from star shows, laser shows and slide
shows, to web, print, TV and radio. He is President of the IAU Commission 55 Communicating
Astronomy with the Public, manager of the ESA/ESO/NASA Photoshop FITS Liberator project,
executive editor of the Communicating Astronomy with the Public journal, and director of four
science documentary movies. Lars received the Tycho Brahe Medal in 2005 as the youngest
recipient so far for his achievements in science communication.
Back end paper:
Gravitational lensing
Hubble uses a natural “zoom lens” in space to give an unprecedented and dramatic new view of
the distant universe. Hubble peered straight through the center of one of the most massive
galaxy clusters known, called Abell 1689.
Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA), J. Blakeslee (NRC Herzberg
Astrophysics Program, Dominion Astrophysical Observatory), and H. Ford (JHU)
Back cover:
Credit: