Solar System News (miscellaneous articles)


Recommended Posts

JCooper

Even Emirates do their best to join the ranks of spacefaring nations. However, the UAE space agency was established not so long ago, in 2014. And after only seven years, they managed to launch an orbiter to Mars. That's why I stand for startups. Each country has at least one-two aspiring companies that show a lot of promise, of course, except the third-world countries. However, many African countries already take part in the space race: South Africa, Nigeria, Kenya, Algeria, etc. I got interested in one British company called Skyrora. You've probably heard about it at least once. I have every reason to believe that it will raise the British space industry to a new level. Here is the link to their website if anyone is interested https://www.skyrora.com/.

Link to post
Share on other sites
Jim K

 

Quote

//

In the new study, researchers used Chandra observations taken in Uranus in 2002 and then again in 2017. They saw a clear detection of X-rays from the first observation, just analyzed recently, and a possible flare of X-rays in those obtained fifteen years later. The main graphic shows a Chandra X-ray image of Uranus from 2002 (in pink) superimposed on an optical image from the Keck-I Telescope obtained in a separate study in 2004. The latter shows the planet at approximately the same orientation as it was during the 2002 Chandra observations.

 

What could cause Uranus to emit X-rays? The answer: mainly the Sun. Astronomers have observed that both Jupiter and Saturn scatter X-ray light given off by the Sun, similar to how Earth’s atmosphere scatters the Sun’s light. While the authors of the new Uranus study initially expected that most of the X-rays detected would also be from scattering, there are tantalizing hints that at least one other source of X-rays is present. If further observations confirm this, it could have intriguing implications for understanding Uranus.

 

//Snip

(Source: Link in above tweet)

 

 

Think it's past time to send another probe to Uranus.

 

 

Link to post
Share on other sites
adrynalyne
1 hour ago, Jim K said:
 

 

 

 

Think it's past time to send another probe to Uranus.

 

 

Giggity.

Link to post
Share on other sites
DocM

DoD's DRACO program advances another step. This fits with other DoD projects to maneuver in cis-lunar space, a counter to China & Russia's published plans. China's CNSA space agency is a military program, both are negotiating a cooperative cis-lunar Operations, and both are developing & testing space weapons. 

 

https://spacenews.com/general-atomics-wins-darpa-contract-to-design-nuclear-reactor-to-power-missions-to-the-moon/

 

Quote

General Atomics wins DARPA contract to develop nuclear reactor to power missions to the moon

 

WASHINGTON — The Defense Advanced Research Projects Agency awarded a $22 million contract to General Atomics to design a small nuclear reactor for space propulsion, the agency announced April 9.

 

General Atomics, based in San Diego, California, was selected for the first phase of a program known as a DRACO, short for Demonstration Rocket for Agile Cislunar Operations. The project is to demonstrate nuclear thermal propulsion — or the use of a nuclear reactor to heat up rocket fuel to generate thrust. 

 

DARPA’s Tactical Technology Office in May 2020 solicited proposals in a “broad agency announcement.” The goal is to test a nuclear thermal propulsion system in orbit by 2025.

 

Space propulsion systems in use today include electric and chemical propulsion, but other options might be needed for future exploration beyond Earth’s orbit, DARPA noted.  “The DRACO program intends to develop novel nuclear thermal propulsion technology. Unlike propulsion technologies in use today, NTP can achieve high thrust-to-weights similar to chemical propulsion but with two to five times the efficiency.’

>

 

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By zikalify
      Scientists discover four Earth-sized planets orbiting sun-like star
      by Paul Hill



      A team of international astronomers has discovered four Earth-sized planets orbiting Tau Ceti, a star similar to the Sun just 12 light years away, and visible to the naked eye if you’re residing in the southern hemisphere. The planets have masses as low as 1.7 Earth mass meaning they’re some of the smallest planets ever discovered around a Sun-like star.

      Two of the four planets are in the habitable zone of the star, which simply means that they could have liquid surface water; in our own planetary system, Venus, Earth, and Mars are in the habitable zone. An important factor to mention is that the outer two planets that are in the habitable zone will likely be affected by a sizeable debris disc around the star, therefore any life that emerges or could possibly exist would have to contend with asteroids and comets slamming into the planet.

      The discovery of the planets was down to advancements in the astronomers' techniques. They were detected, not directly, but rather by wobbles made to the movement of Tau Ceti. It required techniques that could detect variations in the movement of the star as small as 30 centimetres per second. Researchers are now getting close to being able to detect movements as small as 10 centimetres per second which will allow them to search for planets the same size as Earth.

      Steven Vogt, professor of astronomy and astrophysics at UC Santa Cruz, said:

      Sun-like stars are believed to be the best targets for finding Earth-like planets because they’re less likely to be tidally locked. Small red dwarf stars are more common, however, and any habitable planets that orbit them tend to be tidally locked due to the proximity, making them dissimilar to Earth.

      Source: UCSC

    • By +Gary7
      FBI'S DOC DUMP: Clinton says can't 'recall' about 3 dozen times in interview\

       
       
      It does not matter that she answered over 3 dozen times, "I cannot Recall" in her 3 hour interview, but what does that say about her mental state to be POTUS. You can download the PDF files of the interview.
    • By Crisp
      Source and more
    • By TechAddict
      Hello java developers,
       
      I am primarily a java developer but I've recently done some C# work and one thing that i really liked was how C# makes event driven programming so easy. So, when I came back to Java, it was a feature that i really missed. Of course, event driven programming is not impossible to do in Java, but it requires you to write addListener, removeListener, keep a list of observers etc in each class. You an also make your of Observable interface but it just does not offers the same flexibility as C# events.
       
      I've searched for good libraries that offers similar functionality, but most of then were mainly annotation driven or hard to use or too complicated. So decided to write a framework myself. After spending some considerable amount of time researching and trying out different methods, I've finished a java library that tries to mimic C# events while keeping the code very minimal. And I though I might make the library available to anyone interested in this small project or those who have been looking for a good event driven framework.
       
      The project is called "JEvents" (yeah,i know, a lame name) and is available here -> http://chanthus.github.io/JEvents/
       
      Hope you find it useful. Feel free to point out any mistakes or give any suggestions.