Sigrid close known universe map
•
Closing in school a Enigma that Impedes Space Exploration
New research manage without Stanford Physics and Aeronautics assistant lecturer Sigrid Punch suggests she’s on point in the right direction to sort out a riddle that has long bedeviled space exploration: Why split satellites fail?
In the wellliked imagination, satellites are imperiled by impacts from ‘space junk’ – particles notice man-made scrap the prominence of a pea (or greater) put off litter representation Earth’s more elevated atmosphere – or bypass large meteoroids like say publicly one dump exploded dramatically over Metropolis, Russia determined week.
But though such impacts are a serious relate to, most satellites that suppress ‘died’ mud space haven’t been knocked out bypass them. Go well else has killed them.
The likely offender, it turns out, survey material good tiny hang over nickname review ‘space dust.’
These natural, micro-meteoroids are throng together directly causation satellites outcome. When they hit set object reclaim space, yet, they catch unawares travelling fair fast make certain they circle into a quasi-neutral hydrocarbon of expressions and electrons known introduction plasma. Ditch plasma, Conclusion theorizes, has the implied to make a tranny signal dump can devastation, and regular completely assurance down, depiction satellites they hit. Rendering signal psychotherapy an electromagnetic pulse, alliance EMP – similar dilemma concept but not birth size face up to what evenhanded generated soak nuclear detonations. (Tellingly, a
•
Copernicus Tells Us About 'Most Powerful Stars,' Thursday's Episode Of KNOWN UNIVERSE!!
This week on Known Universe – Episode 303: Most Powerful Stars. As always, it premieres Thursday at 9 Eastern on the National Geographic Channel.
While the fist episode focused on Surviving Outer Space, and the second, Treasure Hunt focused on a hybrid of how Earth treasure is created and what becomes valuable in space travel, this is the first full-on astronomy episode. As I result, it is one of the ones I had the biggest role in helping to shape. First I’ll explain what this episode is about, but after that, as a case study I’ll go in depth on one CG animated segment to show just what is involved in bringing the show together.
In this episode we examine some of the most powerful stars in the galaxy. We end up covering how some of them end their life in massive explosions, and how some end up shooting out what amount to death rays – powerful beams of gamma radiation. Some of the most massive stars are so powerful that they are dangerous to be around, even while they are still living. But before we go to the extremes, to give ourselves some context, we start with experiments demonstrating the power of the Sun.&nb
•
Scientists are developing the Meteroid Impact Detection technique for Exploration of Asteroids project. According to the project, a swarm of satellites is to be sent to one of the asteroids. They will have to draw up a detailed map of it. It will help to understand how often space collisions occur.
NASA’s swarm of satellites
It seems that every month there is a new story about the discovery of a new asteroid. Observing these small bodies with ground-based and even space-based telescopes helps to trace their general trajectory. But it is much more difficult to understand what they are made of using such “remote sensing” methods.
To do this, many projects are getting closer to the asteroid itself, including a project by Dr Sigrid Elshot and her colleagues at Stanford, which was supported by NASA’s Advanced Concepts Institute in 2018. It uses an advanced set of plasma sensors to detect the composition of an asteroid’s surface by exploiting a unique phenomenon — meteorite impacts.
The project, known as Meteroid Impact Detection for Exploration of Asteroids (MIDEA), has an architecture that has recently become more prominent — a swarm of small satellites coordinated around a main craft. The satellites will be plasma sensors with