F. Stephan's Blog, page 14

Do you know Oumamua?

Do you know Oumamua, our space visitor? More importantly, do you know where it comes from and how it was torn apart? I love this story! Go and have a look


 


https://www.space.com/interstellar-object-oumuamua-origins-tidal-disruption.html

The universe expands differently depending on where you are …

Go and have a look. This is huge! Maybe even where you are, you who reads this, wherever you are on Earth.

https://www.space.com/universe-expansion-rate-may-vary.html

The HMS Explorer accelerated to one c, his crew sleeping deeply, each in his own cryogenic coffin. They cruised at that speed following the curvature of the universe. The theory was simple. They would return to their point and time of origin. It would take an infinite time and no time at all, relativistic speed helping. But maybe to a better point of origin. Earth was failing so fast now. No humans would survive another century.

They cruised and cruised. A few died when their cryogenic coffins malfunctioned. But all in all, four hundred awoke when the ship braked out of one c. Earth was in front of them, where they had expected it. But no communications came. No radio signal. No electromagnetic wavelength. They took their shuttles and landed, discovering homo neandertalis at the peak of his society.

Universe was not homogenous. Curvature and speed had brought them back. But not to their point of origin. So, well, they settled the land. Again. Hoping for the best.

Small is beautiful

Do you think small is beautiful ? Here is the new challenge from NASA “Honey, I shrunk the NASA Payload.” Up to it ? Go and get it into the challenge !


 

Source : Nasa

How do we exercise in microgravity?

How will we exercise in microgravity during long flights? confinement shows us how difficult it is. Here is a quick summary of what the astronauts are facing on a daily basis. Go and have a look.


 


http://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/Getting_a_jump_on_astronaut_fitness

picture from ESA

What is the Artemis program ?

Are you aware of everything included in the Artemis program ?It’s the program that will bring the US to the moon.


I was looking at interesting news from space.com when I decided to go and have a look at wikipedia. And found this very detailed article on the Artemis mission. I recommend it thoroughly !


 


https://en.wikipedia.org/wiki/Artemis_program

NASA – public domain

Sterilisation and Mars

Are you concerned with Earth’s atmosphere contamination when bringing back rocks from Mars ? Here is an interesting article on the sterilisation applied from Earth toward Mars. It is critical in a mission designed to find life on Mars. Go and have a look.


 


http://www.esa.int/ESA_Multimedia/I

Credit : ESA

mages/2020/04/Sterilisation_for_planetary_protection

Fly on Mars

Do you know the story behind the copter which is flying right now toward mars ? Some articles from NASA are a bit dry and technical. This is the story of a man, of a team behind him and of his dream to fly on Mars. Go and have a look


 


https://mars.nasa.gov/news/8639/the-man-who-wanted-to-fly-on-mars/

Copter from Mars – credit to NASA/JPL-Caltech

Weird objects in space

The 12 weirdest objects found this year in space. Cool images, strange ideas that will send you so far you’ll take ages to come back (at usual speed of light). Safe travel !

https://www.livescience.com/64993-weirdest-celestial-objects.html

Bankrupt satellite company in close orbit

I can’t believe it. A constellation of satellite launched to pollute the near orbits and its mother house going bankrupt. Let’s hope someone will buy it back.


Space station acheron is about running a station. But I never imagined such a situation. A ring empty at L2 because its mother company is bankrupt …


 https://www.space.com/oneweb-satellite-internet-startup-files-for-bankruptcy.html

ESA for kids !

I have just found the ESA ressources for kids ! I highly recommend it ! Go and have a look !


 


http://www.esa.int/kids/en/home