Well done to the SpaceX team on Falcon 9 launch

One of the best "good news" stories of the past week has been the successful launch of SpaceX's Falcon 9 rocket.

If their programme continues to be this successful, it will indeed start a new era of spaceflight. It is already helping to stimulate new ideas about how to approach launch vehicles for spacecraft and may help to go further into other aspects of space exploration.

The FIFA World Cup 2010 - yes, it is here

It has been in the headlines for so long that one can almost not remember what it felt like without the FIFA World Cup dominating just about everything else in South Africa as far as hot topics are concerned.

For very many it is truly a dream come true. Some couldn't really care less about sport in general and football in particular, or about large events involving big crowds. Many worry about the real economic impact the World Cup will have on the South African economy. 

Others worry for different reasons - because they are in charge of some of the major arrangements nationally or in their home city. Let's hope for their sake they will have reason to start relaxing soon.

The Case of the Missing Ring and the New Bright Spot

Well no, this is not a whodunnit story (although it might easily be one!), it is a real science mystery.

The case of Jupiter's missing South Equatorial Belt is one that even professional astronomers are finding hard to explain. Although it has happened before on this planet with its turbulent weather, it is relatively rare for us to see the gas giant without that belt. Generally it is a rather baffling event.

The restaurant at the end of the Universe does not close in 2012...

25 May is a special day in the lives of fans of the work of Douglas Adams (1952-2001). Since I am one of those fans, I’m indulging in ponderings about his writings which, as I have discovered over the years, are close to the hearts of many of my friends and acquaintances  as well.

I am not aware of many other authors who have a special commemorative day that is celebrated all over the world. But on Towel Day, the annual celebration on 25 May, Adams fans around the world – and presumably the rest of the universe - proudly carry a towel in his honour. If you forgot to do so this year, then there are about 360 days left to plan your outfit (plaid dressing gown and slippers are strongly advised) and get your towel laundered.

The greatest threat?

Recently I was contemplating the significance of Earth Day (today, 22 April) and asked people on one of my websites what they thought of as the main candidates as the “greatest threat to Earth”. The answers included global warming (and related factors such as the ice caps melting and major coral reefs and forests dying), over-population, the lack of (or limited use of) renewable energy resources, a strike by a major asteroid or comet, some other major event in the Solar System, a nearby supernova and of course also the Sun.

My original question had been a bit misleading, because I wanted to see to what extent people equate the future of the planet with the future of life on Earth, and specifically the future of the human race. It is natural that we see the universe from the one point of view with which we can identify – the human perspective.

Although natural disasters may play a role, modern man is the probably the greatest threat to life on Earth - or to sustain life for beings such as the human race. There is no agreement on the time scales involved, but the majority view seems to be that, unless we act fast, we are heading towards destroying the environment to such an extent that in time to come, only very resilient life forms (and man might not be one of those!) will survive.

Fleeting moments - astronomically speaking

The fireball seen in the Northern parts of South Africa the country late last year prompted me to ponder about our fragile planet being hit by objects from space. However, it also made me think about the thrill and lasting impressions of some fleeting moments relating to astronomy.

There is the “everyday” beauty of moments of unexpected delight: a full moon that suddenly rises from behind buildings or a mountain like a butter-coloured yellow balloon against a navy-blue early evening sky. Or the pleasant surprise of looking up from the centre of a light-polluted city on a very clear evening - and realising that I could easily count six of the Seven Sisters in the Pleiades. Or watching the stars pop out one by one as you sit at the beachfront and having a stranger come up to you to ask if they may borrow your binoculars for a moment to look at Jupiter or Saturn.