Education
Comets are unpredictable beasts
The media was full of talk of comets with the inaugural visit of Comet ISON C/2012 S1. It was pre-hyped as being “The Comet of the Century”, being visible in daylight etc, etc. The reality of the matter is that comets are strange beasts and are rarely predictable unless they have been round a few …
Catch a falling star: Quadrantids ring in 2014
Falling stars, shooting stars and fireballs are all common names for meteors. ‘Catch a falling star and put it in your pocket’ was a number 1 song by Perry Como from 1957. The lyrics, of course, allude to meteors. To bring in the new year there is a regular meteor shower called the Quadrantids. This …
Students send experiments to space on suborbital flight
Gasps, whistles, and cheers burst from 300 observers as the SpaceLoft 7 rocket blasted into the sky from Spaceport America in southern New Mexico. Among the crowd were 60 students, ranging from middle school through university level, who watched the rocket carry experiments they had designed and built. “That feeling of seeing something you built …
Delta V and the GRAVITY of the situation
In the recent film release, “Gravity,” astronauts are left stranded at the Hubble Space Telescope (HST) after a pretty horrific accident. Since one of the astronauts was wearing a Manned Maneuvering Unit (MMU), they used the nifty apparatus to get to the International Space Station (ISS). We like this movie, even though many space blogs …
How long before we get there?
Vocabulary • Apoapsis Delta V Burn: The rocket firing at the highest point of a Transfer Orbit. • Periapsis Delta V Burn: The rocket firing at the lowest point of a Transfer Orbit. • Transfer Time: The time between apoapsis and periapsis Delta V rocket firings. Narrative Getting from one orbital altitude to another not …
NASA Spinoffs from Mars exploration
In 1997, NASA’s Sojourner robot became the first rover to explore the surface of Mars. NASA has since launched other successful rover missions, gathering precious information in preparation for an undertaking that has long captured people’s imaginations—a manned mission to Mars. The challenges such an enterprise poses have necessitated new technologies that are not only …
Top 10 must-see list for new astronomers
It is very difficult to draw up a Top 10 list in any subject. In astronomy it is even more difficult due the the huge number of prospective candidates for the list. I have made it somewhat easier by restricting the list to things that beginners may view with relatively basic equipment. My list is …
Starting in astronomy: Recognising the night sky
When you look up into the night skies you will see a myriad of twinkling stars. With all of the stars in the sky you would have thought it would be impossible to recognise individual ones, but you would be wrong. Of course, nobody can recognise all of them but by starting to see patterns …
Cygnus the swan
Cygnus, The Swan, is a majestic and easy to identify constellation in the northern hemisphere. This is best viewed in summer and autumn when it rises overhead in the night skies. Cygnus is a great naked eye constellation with lots of detail and great objects within it as you start to use more powerful optical …
NASA Spinoffs for health and medicine
As NASA continues its mission to carry human presence deeper into space and expand our knowledge of the universe, the Agency’s efforts also reach into another territory—the inner space of the human body. NASA partnerships are exploring the use of carbon nanotubes to diagnose and treat brain tumors, perfecting fiber optic probes for detecting cataracts …