Laghouat recherche scientifique

27/03/2024

18/11/2023

12/11/2023

Decades of testing went into sending the Webb telescope into space — and now it's helping us out here on Earth.

A simulation software improved by Webb's development is helping to design augmented reality displays and headsets, medical tools and more: https://go.nasa.gov/3SulhDW

10/11/2023

22/10/2023

📷: Ghost Aurora over Canada
© Yuichi Takasaka, twanight.org/takasaka
Astronomy Picture of the Day in NASA on October 22, 2023.

Explanation: What does this aurora look like to you? While braving the cold to watch the skies above northern Canada early one morning in 2013, a most unusual aurora appeared. The aurora definitely appeared to be shaped like something, but what? Two ghostly possibilities recorded by the astrophotographer were "witch" and "goddess of dawn", but please feel free to suggest your own Halloween-enhanced impressions. Regardless of fantastical pareidolic interpretations, the pictured aurora had a typical green color and was surely caused by the scientifically commonplace action of high-energy particles from space interacting with oxygen in Earth's upper atmosphere. In the image foreground, at the bottom, is a frozen Alexandra Falls, while evergreen trees cross the middle.