Yenra Space Exploration

CubeSat Water Propulsion: How It Works and What It Can Do

Yenra — Tue, 08 Aug 2017 04:00:00 GMT

Compare water-vapor and electrolysis propulsion, calculate a simple impulse example, and distinguish laboratory, suborbital and orbital demonstrations.

Published: 2017-08-08. Updated: 2026-10-13.

Water on the Moon: Where It Is and How We Know

Yenra — Mon, 24 Jul 2017 04:00:00 GMT

Explore lunar polar ice, surface molecules and volcanic water evidence, then distinguish a discovery from a usable resource.

Published: 2017-07-24. Updated: 2026-10-13.

InSight: What Marsquakes Revealed About Mars

Yenra — Wed, 16 Dec 2015 05:00:00 GMT

Connect InSight instruments and seismic signals to discoveries about the Martian interior, and understand the mission outcomes and uncertainties.

Published: 2015-12-16. Updated: 2026-10-13.

Mars Exploration: How We Study the Red Planet

Yenra — Mon, 13 Mar 2006 05:00:00 GMT

Understand how orbiters, landers and rovers investigate Mars, connect observations to evidence, and follow discoveries with confidence.

Published: 2006-03-13. Updated: 2026-10-13.

How Mars Missions Send Data Home

Yenra — Thu, 12 Feb 2004 05:00:00 GMT

Trace the rover-to-orbiter-to-Earth data route, distinguish delay from data rate, and calculate a simple Mars communication example.

Published: 2004-02-12. Updated: 2026-10-13.

Water on Mars: Ice, Ancient Rivers and the Evidence

Yenra — Thu, 13 Nov 2003 05:00:00 GMT

Distinguish frozen water, water-related minerals, ancient river deposits and uncertain liquid-water claims on Mars.

Published: 2003-11-13. Updated: 2026-10-13.

Why Explore Mars? The Questions Behind the Missions

Yenra — Sat, 10 May 2003 04:00:00 GMT

Connect Mars science questions to the measurements that address them, and practice separating evidence, interpretation and uncertainty.

Published: 2003-05-10. Updated: 2026-10-13.

Mars Pictures: How to Find and Read Mission Images

Yenra — Wed, 27 Mar 2002 05:00:00 GMT

Find official Mars images, check scale and processing, work through a Nirgal Vallis example, and keep a useful observation record.

Published: 2002-03-27. Updated: 2026-10-13.