Collecting More than Moon Rocks

You are likely aware of the Moon rocks returned by the Apollo missions – in fact, you may have touched one at the H.R. Macmillan Space Centre. But the manned Apollo 11 mission in 1969 was just the first of several successful sample return missions that have returned pieces of other Solar System bodies.

This year features two new sample return missions: Japan’s Hayabusa2 arrived at asteroid Ryugu in June and has just launched two rovers that have landed and hopped along the surface of the asteroid.

Image of the surface of asteroid Ryugu
Surface of asteroid Ryugu captured by Hayabusa2’s Rover-1A on September 22 while moving during a hop. Image credit: JAXA.

In August, NASA’s OSIRIS-REx started taking pictures of asteroid Bennu.

First images of asteroid Bennu from OSIRIS-REx
On Aug. 17, the OSIRIS-REx spacecraft obtained the first images of its target asteroid Bennu from a distance of 2.2 million km, Bennu is visible as a moving object against the stars in the constellation Serpens.

Both spacecraft will start by surveying their target asteroids, later they will collect and return surface samples to Earth. Sample return missions are difficult and not cheap. They demand safe transit and return, like manned missions, along with the autonomy and deep-space operations of robotic missions while keeping the sample uncontaminated all the way from space to laboratory. The Planetary Society has a interesting list of  ten failed missions where the solar system reminded us sample collection is hard.

Scientist crave  pristine samples that can be analyzed by Earth-based instruments that are not limited by the power, size, complexity, or weight limitations of space-based instruments. Up to the present, samples have been collected from six Solar System bodies as well as he solar wind. Extraterrestrial samples have been collected from meteorites and cosmic dust at clean locations on the Earth’s surface, by airplanes in the upper atmosphere, and by satellites in orbit. But these methods often come a with a great deal of uncertainty in linking the sample with its parent asteroid or comet. Sample return missions resolve this vexing source of uncertainty. The  comet Wild 2 and the asteroid 25143 Itokawa were visited by  unmanned spacecraft in sample return missions.

Samples from comet Wild 2 collected by the Stardust mission in 2006 have furthered our understanding of how the solar system formed and the origins of life. The comet samples showed that the outer regions of the early Solar System were not isolated and were not a refuge where interstellar materials could commonly survive. The data suggested that high-temperature inner Solar System material formed and was subsequently transferred to the Kuiper Belt. In 2009, NASA  announced that a fundamental chemical building block of life, the amino acid glycine,  was detected in the material collected by the Stardust probe. This discovery strengthened the argument that life in the Universe may be common rather than rare.

Sample return missions  can also provide detailed understanding of the hazards and engineering challenges in future missions for mining asteroids.

Prospecting precedes on Earth, and sample return is the prospecting that will precede mining in space.
-Keiko Nakamura-Messenger, scientist on the OSIRIX-Rex and Hayabusa2 missions.

Mars remains as the ultimate goal and most challenging sample return mission. Its deep gravity well implies a hefty cost and high risk that has repeatedly created conflict between the scientific community and White House budgeteers. As a compromise, the upcoming Mars 2020 rover mission includes plans to cache samples for future return. Meanwhile, NASA and China are planning sample return missions to Mars for the late 20s or early 30s, and Japan’s MMX mission plans to bring back a sample from Mars’ moon Phobos.

Science Fair Director Receives the Order of Canada

Science Fair Foundation of BC Director, Bryan Tisdall, was awarded the Order of Canada in Ottawa on Thursday September 6th, 2018 for his contributions to improving youth science literacy and for his dedication to fostering a love of science among the residents of British Columbia. The award was presented to him by Her Excellency the Right Honourable Julie Payette, Governor General of Canada.

Tisdall came to Vancouver and spent nearly two decades as CEO of Science world, from 1997 to 2016. In his time at Science World he was pivotal in building the organization to become the renowned, not-for-profit, leading symbol of the science community it is today. He joined the Science Fair Foundation of BC (SFF BC) Board of Directors in 2010. Tisdall is a trusted advisor on the SFF BC Board of Directors and continues to volunteer as emcee at the annual Science Fair Fun Run.

Part of Tisdall’s success in the Science Community of BC, he attributes to learning to think like a scientist. “It’s being analytical. It’s being questioning. It’s being open,” he said. “It’s appreciating you may never have all the answers.”

 

Astronomy Weekend at Manning Park

RASC Vancouver is participating in the Manning Park Dark Sky – Astronomy Weekend on October 12th-14h, 2018.

Milky way over mountains

The Dark Sky in Manning Park offers some of the best stargazing around. With multiple viewing locations and very limited light pollution (Bortle class 2), the views are incredible!

The event includes presentations  on Beginner Astronomy 101, an Introduction to Astro-photography, and the Basics of Observational Astronomy.

On Friday and Saturday night, weather permitting, RASC members will have telescopes setup for stargazing, observing planets (Mars, Uranus and Neptune will be visible) and hunting for deep-sky objects such as nebula, globular clusters, and galaxies.

The complete schedule, including several other family-friendly activities, can seen at http://manningpark.com/event/astronomy-weekend/

 

 

 

Observing and Imaging at the Trottier Observatory

Selected nights at the SFU  Trottier Observatory are currently allocated, by the kind auspices of Howard Trottier, for the use of the telescope by members to observe and image the night sky.

We would like to offer any members who may be interested in astrophotography or similar scientific pursuits ( or simply observing) to schedule sessions using the telescope hosted by the Director or Telescopes  or another RASC council member.

To be added to an email list notifying users of available time, please email the Director of Telescopes (please include your name and the target you are interested in studying).  Whenever there is time available, the Director of Telescopes will schedule a session, send out an email to interested members and ensure that the session is hosted.

Email – [email protected]