Enjoy a Space Month Full of Beauty and Awe

This month features exclusively free, virtual events, open to stargazers across the globe. Activities are designed so that novices can participate along with pros.

Detect Trojan Asteroid Rhesus and Discover More about our Solar System

On April 7, a Trojan asteroid known as 9142 Rhesus will occult (pass in front of) a star. This will be visible across a path sweeping over North America. Trojan asteroids are located in two groupings which orbit ahead and behind Jupiter. They were most likely captured 4 billion years ago during Jupiter’s migration towards the Sun, so they may contain clues on the history of our solar system.

Learn more about Trojan asteroids and how to observe Rhesus.

Trojan asteroid 9142 Rhesus
Artist illustration of Trojan Asteroid 9142 Rhesus. Credit: Ron Miller

Weekly Celestial Observation Challenges

Discover the mystery and majesty of Deep-Sky Objects such as nebulae, galaxies, globular clusters and much more. New Observation Challenges kick off every Friday.

For details, follow Unistellar on Facebook, Twitter and Instagram.

New Opportunity: Detect a Brown Dwarf!

Unistellar citizen astronomers based all over the world can take part in a new challenge: detecting a brown dwarf! On April 6, 13, 20, and 28, a brown dwarf will transit (pass in front of) its star, from our view here on Earth. This brown dwarf was recently discovered by NASA’s Transiting Exoplanet Survey Satellite (TESS) mission, and if successful, this would be the first brown dwarf detection by eVscopes!

But what is a brown dwarf? It’s larger than a planet, but smaller than a star — it is in a completely different category.

Learn more about brown dwarfs and this exciting opportunity.

Comparison brown dwarf Sun low mass star planet Jupiter Earth
Comparison of a brown dwarf to our Sun, a low mass red dwarf star, Jupiter, and Earth. Credit: Björn Jónsson, FarGetaNik, cubicApocalypse, Planetkid32