Technology

Interstellar comet update - Out of Space

Duncan Steel Sep 19, 2019

The discovery of a true interstellar comet – a comet passing through the solar system having arrived, presumably, after having been thrown out of some other planetary system orbiting another star – re-opens a long-debated question in science: is life unique to Earth, or is it common in the galaxy? The panspermia hypothesis holds that life is common in the … Read More

New Zealand needs to wake up to the possibilities of a circular bio economy - Guest Work

Guest Author Sep 13, 2019

Elspeth MacRae New Zealand is at a crossroads, a pivotal point in history where solutions must be found to stem the tide of eco-system collapse, fight climate change, provide for a growing population and find ways of consumption that respect the ecological boundaries of the planet. Now there is a real urgency to find innovative solutions, be bold, and … Read More

New interstellar comet discovered - Out of Space

Duncan Steel Sep 13, 2019

Astronomers have searched over many decades for comets that have come from interstellar space, perhaps from a planetary system orbiting a nearby star in the Milky Way. A blank was drawn in this quest for a long, long time… and now, similarly to London buses, two have come along almost at once. The diagram at the head of this post … Read More

How the Indian lunar lander was lost - Out of Space

Duncan Steel Sep 09, 2019

The Indian lunar lander and the rover it was carrying appear to have been destroyed when they plummeted to the surface after contact with them was lost when about 2 km up and a few minutes from the planned soft touchdown. Here I examine what one can deduce about what happened, and when, from the TV coverage of the situation … Read More

Lunar landing by Indian space probe - Out of Space

Duncan Steel Sep 06, 2019

All being well, the Indian space probe Chandrayaan-2 now in orbit around the Moon will drop its lander safely and softly onto the surface on Saturday morning. The lander (named Vikram) will then roll out its rover (Pragyan), which it is hoped will prowl around for the next two weeks before the cold of the lunar night closes it down. Read More

An invitation to name a star and a planet - Out of Space

Duncan Steel Sep 04, 2019

The International Astronomical Union (IAU) — the global organisation of professional astronomers — is marking its centenary this year by inviting different nations to propose names for both a distant star, and a planet found to orbit it (a so-called exoplanet). Anyone can suggested a moniker, for the star, for the planet, or both. So: calling all New Zealanders to … Read More

The fires in Brazil in satellite imagery: Part 1 - Out of Space

Duncan Steel Aug 31, 2019

The numerous fires now burning in Brazil have been much-discussed of late, with world leaders complaining that the nation’s authorities allowing such clearing of land is highly detrimental to international efforts to limit the release of more carbon dioxide into the atmosphere, with the potential to exacerbate anthropogenic global warming/climate change. In this post I illustrate how such fires may … Read More