Space NEWS #4

Hi,
last time in Space NEWS I was writing about SLS, the Space Launch System. Today I will add some more stuff because NASA finished simulations of booster separation.


So first, those boosters are those things you can see on the right. They are Two Space Shuttle SRBs on the Crawler transporter.jpgthe first part of rocket to be used up when its launched. The problem is that something can happen when they are separeted from the rest of rocket (the separation must be precise so it wont move with the rest of the rocket).

There had to be about 22,000 different simulations to see if everything is ok. Those simulations were made by the supercomputer Pleiadas (like the constellation). Each simulation took about 200 hours and together with some other simulations it took 12.7 million hours Simulating SLS Booster Separationto complete it (there were also overflow more precise simulations. Each of them took 20,000 hours and there was almost 400 of them). Omg really? On the left is one of those simulations. The violet, red and orange thing is the shockwave. On the end you can see the separation of boosters.

Dragallur
EDIT: Those 12.7 million hours were divided between 400 Intel Xeon Nodes, otherwise it would take over half a million days to complete it.

Pictures from: https://www.nasa.gov/ames/image-feature/simulation-sls-booster-separation AND “Two Space Shuttle SRBs on the Crawler transporter” by Photo credit: NASA/Ben Cooper – http://mediaarchive.ksc.nasa.gov/detail.cfm?mediaid=49261. Licensed under Public Domain via Commons – https://commons.wikimedia.org/wiki/File:Two_Space_Shuttle_SRBs_on_the_Crawler_transporter.jpg#/media/File:Two_Space_Shuttle_SRBs_on_the_Crawler_transporter.jpg

Space NEWS #3

Hi,
today I am bringing third space news. This time I will talk about journey to mars and especially SLS the Space Launch System.


Ok it is planned. What? The journey to Mars. But sorry guys I can not tell you exactly when, actually noone know but it is planned by NASA to about 2030. Damn so far away, anyway I am looking forward to see faces of those none believers of moon landing when we will land on Mars.

So there is lot of stuff scientists have to do. There are many issues that need to be solved, and yes right we dont know how fast we can solve them.
But today I want to mention the SLS. Because Saturn V which was the rocket that took us to the Moon is not strong enough and not modern enough we need something better which will be lighter, faster, with more space for stuff to carry and still not too large.
The main problem with older rockets was that more than 90% of the weight was fuel which is not something that NASA wants to repeat, rather they are working on some new technologies.
For example almost one year ago in December NASA tested Orion spacecraft which will on top of SLS carry astronauts to Mars some day. Orion orbited succesfully Earth two times.
Lot of stuff is happening around journey to mars so I will try to update on this topic.

Dragallur
Picture thanks to NASA.
PS: hope those guys in wordpress will return the function “link to existing content” because right now it is pretty anoying to find every post I want to link to on my blog

Space NEWS #2

Hi,
Today I am bringing space news. Just a short ones. So in last post I mentioned gamma-ray bursts. I found out that NASA found one GRB
 graph shows Fermi Large Area Telescope data from August 2008 to July 2015 for gamma rays with energies above 100 million electrhappening over and over again. As you can see on the picture there is real repeating of many and many GRBs.
Those come from black hole, a supermassive black hole from active galaxy 5,000,000,000 light years away.
It has accretion disk but scientists are not sure yet why it is in such a periods so one of many hypothesis is that there is actually second black hole which as its orbits the first one makes changes to the disk which then make some bursts bigger than other.
Dragallur

Space NEWS #1

Hi,
I decided to write about Space NEWS! Most of them probably would be from NASA page.
Today I want to start with WT1190F impact of Earth and then about cloud which was found in Titan`s atmosphere.


First, yesterday 13th November some space debris entered the Earth`s atmosphere.
Most of it burned up in the atmosphere but still it made a WT-reentry-fireball-tight.jpgfireball.
For few years object named WT1190F orbited Earth in more and more eliptical orbit. Finally this object falled down entering atmosphere in 11 kilometers per second. Nobody was in danger because it fell about 100 kilometers south of Sri Lanka.
For some time it was not Trvalý odkaz na vložený obrázekknown if its asteroid or not but finally when its density was calculated astrophysicists were sure that it is hollow and manmade. This event was important for improvment of calculating of stuff falling from the space.
Pictures taken from wikipage about WT1190 and twitter page.

A cloud system called the south polar vortex on Titan's south poleIn Titan`s atmosphere (Titan is Saturn`s moon) Cassini found a giantic storm forming.
Those clouds are about 200 kilometers tall. Cassini used its infrared toll called Composite InfraRed Spectrometer (CIRS).
Those clouds form in very strange way. Not by water evaporating from ground but by flow of gases from warmer pole to the other where those gases sink and in different levels of atmosphere they condensate forming those clouds.
Titan`s seasons last more than 7 years and this is the time when winter starts on Titan`s southern hemisphere.
This page by NASA.

Dragallur