Zenith Tech Summary

OpenRocket Simulator

OpenRocket is a free, fully featured model rocket simulator that allows you to design and simulate your rockets before actually building and flying them.

Can You See 3I/ATLAS Tonight? The Infamous 'Alien' Comet Comes Nearest to Earth

Attention all space enthusiasts! The enigmatic interstellar comet 3I/ATLAS is set to dazzle the night sky as it approaches its nearest point to Earth this week. Amidst fervent speculation and wild ali...

How can you track and watch Interstellar comet 3I/ATLAS live as it makes it closest approach to Earth tomorrow? Check details

Exciting news for space enthusiasts! The interstellar comet 3I/ATLAS is set to dazzle the night sky as it approaches its closest point to Earth tomorrow, December 19. NASA assures us that this cosmic ...

Image of 3I/ATLAS from the Juice Navigation Camera - Avi Loeb – Medium

In a groundbreaking moment for space enthusiasts, the European Space Agency recently unveiled a captivating image of the interstellar comet 3I/ATLAS captured by the Juice Navigation Camera. This remar...

Watch live here today as NASA releases new photos of interstellar 3I/ATLAS - USA Today

Exciting news for space enthusiasts as NASA unveils fresh images of the interstellar comet 3I/ATLAS! Witness a celestial spectacle unfold live today as NASA shares stunning photographs captured by spa...

How to spot 'potentially hostile alien threat' that can now be seen from Earth

Attention all space enthusiasts and stargazers! The interstellar comet 3I/ATLAS, dubbed as a 'potentially hostile alien threat,' has made its way into our view from Earth. This fascinating cosmic visi...

Space Mission Options for Reconnaissance and Mitigation of Asteroid 2024 YR4

Near-Earth asteroid 2024 YR4 was discovered on 2024-12-27 and its probability of Earth impact in December 2032 peaked at about 3% on 2025-02-18. Additional observations ruled out Earth impact by 2025-02-23. However, the probability of lunar impact in December 2032 then rose, reaching about 4% by the end of the apparition in May 2025. James Webb Space Telescope (JWST) observations on 2025-03-26 estimated the asteroid's diameter at 60 +/- 7 m. Studies of 2024 YR4's potential lunar impact effects suggest lunar ejecta could increase micrometeoroid debris flux in low Earth orbit up to 1000 times above background levels over just a few days, possibly threatening astronauts and spacecraft. In this work, we present options for space missions to 2024 YR4 that could be utilized if lunar impact is confirmed. We cover flyby & rendezvous reconnaissance, deflection, and robust disruption of the asteroid. We examine both rapid-response and delayed launch options through 2032. We evaluate chemical and solar electric propulsion, various launch vehicles, optimized deep space maneuvers, and gravity assists. Re-tasking extant spacecraft and using built spacecraft not yet launched are also considered. The best reconnaissance mission options launch in late 2028, leaving only approximately three years for development at the time of this writing in August 2025. Deflection missions were assessed and appear impractical. However, kinetic robust disruption missions are available with launches between April 2030 and April 2032. Nuclear robust disruption missions are also available with launches between late 2029 and late 2031. Finally, even if lunar impact is ruled out there is significant potential utility in deploying a reconnaissance mission to characterize the asteroid.