Out of Space

Among my favourite asteroids: (2472) Bradman

Duncan Steel Nov 25, 2019

There are many thousands of asteroids with formal names, some humdrum but other more noteworthy (depending on your predilections). One of my favourites, the name of which I was involved in suggesting, is (2472) Bradman, named for the Australian cricketing great. After discussing (2472) Bradman, I also make some comments about (6581) Sobers.  As a minor planet (synonym: asteroid) spotter, … Read More

JFK’s assassination: a bit of physics

Duncan Steel Nov 22, 2019

There are perennial arguments about the circumstances of the assassination of President Kennedy in 1963, and in particular whether more than one shooter is required by the evidence (such as the Zapruder film). Those who know little about physics frequently claim that the sharp backwards motion of JFK’s head as the fatal shot hit him is proof that there must … Read More

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Earth’s artificial rings

Duncan Steel Nov 20, 2019

Satellites pass over NZ all the time (literally). Here I focus on the 187 Planet Labs ‘Dove’ Earth-imaging satellites, and I show that one can determine in advance where they will be, enabling scientists on the ground to correlate their environmental and other data collection with opportunities to get imaging from space. That is, we can get ‘space-truth’ (rather than … Read More

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How NZ was put on world maps using a transit of Mercury

Duncan Steel Nov 10, 2019

There will be a transit of Mercury – the planet Mercury will pass across the face of the Sun – taking place at sunrise in New Zealand on Tuesday, 12th November. It was by observing such an event 250 years ago that James Cook and his scientist colleagues were able to determine the longitude of NZ, and so put these … Read More

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India a major player in Earth observation satellites

Duncan Steel Oct 15, 2019

While many imagine that countries like the USA and Europe dominate space activities, in fact India is now a major player on this stage. It launches satellites for its own purposes and also commercially, and has constellations orbiting our planet and returning data of vital importance to that nation in many ways.  Yesterday I was really pleased to give a … Read More

Google Doodle for Bill Robinson’s birthday

Duncan Steel Oct 02, 2019

The Google Doodle today (at least in New Zealand and Australia) commemorates the birth in 1938 of Bill Robinson, the kiwi scientist who invented the rubber ‘shock absorbers’ that provide some seismic insulation for large buildings, notably under Te Papa in Wellington.  Sometimes a Google Doodle (the cartoon seen when one opens the Google search page) leaves one … Read More

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All Blacks take a bath in Beppu

Duncan Steel Sep 28, 2019

The All Blacks are currently resting up in the Japanese spa town of Beppu, awaiting their next game. Like Rotorua and several other spa towns spread around the globe, Beppu has an impact crater on asteroid (951) Gaspra named for it.  Perusing the intellectual pages (i.e. the sports section) in The Press this morning whilst sipping coffee at Yaza! in … Read More