drew@drewexmachina.com
Recently I re-read the 1980 revised edition of Robert Powers’ book Planetary Encounters: The Future of Unmanned Spaceflight which I had bought just a couple of […]
In the days before the internet, the primary means of getting information about space exploration was in books and print periodicals. And back in those days […]
The planets in our solar system are rather neatly grouped into two broad categories: relatively small rocky terrestrial planets and large non-rocky gas giants. With the […]
Sometimes it is amazing the kind of stuff one can find while stumbling around on the internet. A few years ago I found something that seems […]
While one of the primary motivations for NASA’s Kepler mission has been the detection of Earth-size planets orbiting Sun-like stars in Earth-like orbits using precision photometry […]
The first confirmed discovery of an extrasolar planet took place in 1992 with the detection of planets orbiting the pulsar known as PSR 1257+12 followed in […]
Today marks the second anniversary of the announcement of the discovery of the planet α Centauri Bb. But despite the importance of finding a planet orbiting […]
The desire to find life on another planet is as strong today among scientists and lay people as it has ever been. While this search had […]
Without a doubt, the most widely known comet has got to be Comet Halley. First observed in ancient times perhaps as early as 446 BC, it […]
In today’s world, electronic intelligence or ELINT satellites are considered an important part of maintaining the nation’s security. While the National Reconnaissance Office (NRO) is tight […]
In the first part of “The Search for Planets Around Alpha Centauri”, general information about the α Centauri system (also known by the ancient name, Rigil […]
As most of my readers probably already know, I frequently write articles that are published in various print and online periodicals in addition to the material […]
Welcome!
