Events - Talks and Workshops.
||Space: The Final Junkyard|
- Anthony Mc Namee.
Event details ...
The Kessler Syndrome paints a rather bleak picture of the impact of space junk on existing orbiting satellites and on the future of space travel.
As of January 2019, it is estimated that there are 34,000 debris objects larger than 10cm in diameter in orbit. These include defunct satellites, spent rocket boosters, empty fuel tanks, debris from accidental collisions that have already occurred, and intentional impacts conducted by various nations contributing to the weaponization of space. In addition, there are 9,000 objects ranging from 1cm to 10cm in size including nuts, bolts, spent rocket fuel, solar panels, a camera and a glove.
And there are 128 million objects from 1mm to 1cm mostly paint chips and various other objects, including bits of wiring and circuitry. Most of these pieces have the potential to damage functioning satellites and interfere with spacecraft entering orbit or even destroy them altogether.
So how did we get to this point, what are we doing to address the problem and what can happen if we do nothing?
Come along to Anthony's presentation to find out!
||From an Earth- to a Sun-centred universe.
- Derek Dempsey
Event details ...
Two observations support the idea that Earth is the centre of the Universe:
Firstly, from anywhere on Earth, the Sun appears to revolve around Earth once per day. The Moon and the planets
have their own motions, but they also appear to revolve around Earth about once per day. The stars appear to be fixed on a celestial sphere rotating once each day about an axis through the geographic poles of Earth.
Secondly, the Earth seems to be unmoving from the perspective of an earthbound observer; it feels solid, stable, and stationary. The Greek astronomer Ptolemy would famously assert "If the Earth moved, the clouds and the birds would be left behind!"
This geocentric view remained the accepted model of the Universe into the early modern age, but from the late
16th century onward, it was gradually superseded by the heliocentric model of Copernicus, Galileo, and Kepler.
|4th - 10th
||Space Week 2019
|November 1st - 3rd
||Mayo Dark Sky Festival 2019
to visit the festival website.
The next observing session will be scheduled soon, depending on the weather (and the midges!).
Anyone out there with a telescope still in its box or gathering dust in the attic ?
Get in touch - we can organize a workshop around getting you set up; you'll be enjoying the night sky through your own telescope
in no time !