The Cigar galaxy (M82) is already famous for the speed at which it creates new stars. The composite image shows the powerful magnetic field lines on a truly epic scale, wrapping around the entire galaxy. NASA's SOFIA observatory (Stratospheric Observatory for Infrared Astronomy - a converted Boeing 747) has shed light on what is happening.
Credits: NASA/JHU-APL Few worlds excite exoplanetary chemists like Titan, Saturn's enigmatic and largest moon. It is the second-largest moon in the solar system, and the only one known to have a dense atmosphere. As such, it is seen as an analogue to the early Earth, and therefore important in understanding how life might have evolved on our homeworld.
I recently came across a youtube video explaining a method for multiplication that was quite different from long multiplication. To explain why this was so interesting, let’s first talk about long multiplication and what’s wrong with it, and then we'll calculate the size of the visible universe in centimeters.
Autonomous landings are always fraught with danger. One of the most dangerous terrains any landing might occur on is a boulder field. Not only would the impact of the landing on these hard objects be a threat, but the boulders are likely to be jagged too. Another threat are the steep cliffs of the crater - not falling off them (although that's a possibility), but crashing into them.
Mysterious Starplugin-autotooltip__default plugin-autotooltip_bigMysterious Star
Back in 2016, Tabetha Boyajian gave a TED talk about a star with nifty little name KIC 8462852. The Kepler space telescope had studied it and lots of other stars over the course of four years, but this one stood out.
Also known as Tabby's Star, it is a main-sequence F-type star located in the constellation Cygnus, about 1,480 light-years from Earth. Its claim to fame of course, is that it was suggested that alien megastructures would explain the weird data that Kepler had recor…
[The Moon - watch out, here we come (again)!]NASA has outlined an aggressive timetable for an equally aggressive return to the Moon, with a view to making the Moon a waystation for trips to Mars. This requires the development of a whole slew of new technologies, as well as ramping up existing technologies and capabilities to whole new levels.
This is my blog. It is an eclectic mix of book reviews by new and up-and-coming authors, articles, science news, random topic monologues and stuff about my software. Sometimes I talk about my fiction writing too.
startplugin-autotooltip__default plugin-autotooltip_bigI'm a novelist and have an interest in space science and physics. I've been a programmer for more than 30 years and I like reviewing new and up-and-coming authors.
If you want me to review your novel, please look at my Rules on Reviewing page.
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blog/articles/science/how_big_is_the_universe.txt · Last modified: 2019/03/06 10:37 by Phil Ide
I needed to calculate orbital characteristics for any orbit around any gravitational mass (because I write sci-fi stories), so I wrote this program because I'm a programmer and I'm too lazy to do it by hand all the time. The program has expanded over the last few years, sometimes from suggestions by other writers. I make it freely available and as simple to use as possible. It now has a list of functions as long as your arm (assuming you're not a tentacle user), and the numbe…
Book Reviewsplugin-autotooltip__default plugin-autotooltip_bigBook Reviews
Here you can find all the book reviews, broken down by genre, and further subdivided by author. If you want me to review your novel, please read my Rules on Reviewing.