Science & Space Archives

Sea Ice Extent vs Area: How to Read Satellite Maps Correctly

October 7, 2026 by Dipak D. Kuthe

Conceptual satellite above an ocean grid with scattered ice fragments and a glowing extent boundary; not observed sea-ice data.

Read satellite sea-ice reports without mixing extent with area, daily maps with running averages, or publication dates with observation dates. Includes a clearly labelled hypothetical calculation and a source-checking workflow.

NASA Eyes on Asteroids: Check Close Approaches Without Mistaking Them for Impact Risk

October 7, 2026 by Dipak D. Kuthe

Use NASA Eyes, CNEOS close-approach tables and Sentry for different questions. Check object names, dates, units and uncertainty before sharing an asteroid impact claim.