A new map of the universe displays for the first time the span of the entire known cosmos with pinpoint accuracy and sweeping beauty.

Created by Johns Hopkins University astronomers with data mined over two decades by the Sloan Digital Sky Survey, the map allows the public to experience data previously only accessible to scientists.

The interactive map, which depicts the actual position and real colors of 200,000 galaxies, is available online, where it can also be downloaded for free.

"Growing up I was very inspired by astronomy pictures, stars, nebulae and galaxies, and now it's our time to create a new type of picture to inspire people," says map creator Brice Ménard, a professor at Johns Hopkins.

"Astrophysicists around the world have been analyzing this data for years, leading to thousands of scientific papers and discoveries. But nobody took the time to create a map that is beautiful, scientifically accurate, and accessible to people who are not scientists.

Recently, NASA's Double Asteroid Redirection Test (DART) spacecraft crashed into a 170 m asteroid Dimorphos at 6.6 km/s, as the first on-orbit demonstration of deflecting an asteroid by kinetic impact. The DART spacecraft was set to impact the center of Dimorphos nearly head-on. Earth-based telescopes have now confirmed that impact successfully changed Dimorphos' orbit period by 32 minutes, much more than expected.

But, where should we impact an asteroid to most effectively deflect its orbit? Simply towards the center of the asteroid? These questions have yet to be well investigated.

In a new paper published in the Journal of Guidance, Control, and Dynamics, researchers of Tsinghua University proposed an optimal kinetic-impact geometry to improve the effective magnitude of kinetic-impact deflection, which should promote our understanding of how to make full use of a kinetic impactor and get best results.

NASA has just launched its first rocket in the Artemis program, which will, among other things, take scientific experiments to produce metal on the moon.

In recent years, a number of businesses and organizations have ramped up efforts to establish technologies on the moon. But doing work in space is expensive. Sending just one kilogram of material to the moon can cost US$1.2 million (A$1.89 million).

What if we could save money by using the resources that are already there? This process is called in-situ resource utilization, and it's exactly what astrometallurgy researchers are trying to achieve.

Why the moon?

The moon has amazing potential for future space exploration. Its gravity is only one-sixth as strong as Earth's, which makes it much easier to fly things from the moon to Earth's orbit than to fly them direct from Earth! And in an industry where every kilogram costs a fortune, the ability to save money is extremely attractive.

Although people have been looking at making oxygen and rocket fuel