Radio Telescope Antennas: How Arrays Make an Image
Understand baselines, resolution, sensitivity and missing spatial scales, then read an ALMA image with the right context.
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Astronomy · Publishers: Yenra
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WISE: How to Explore an Infrared Sky Survey
Find WISE archive images, compare infrared bands, choose between coadds and single exposures, and recognize common artifacts.
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Comets: What You See and How to Plan an Observation
Understand comet tails and brightness, use an ephemeris for your location, and plan a realistic night-sky observation.
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Enceladus: What Its Plumes Reveal About an Ocean World
Connect Cassini's plume measurements with ocean evidence, phosphorus and chemical energy, while distinguishing habitability from life detection.
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Europa: Ocean Evidence, Ice-Shell Questions and Europa Clipper
Follow the evidence for Europa's ocean, understand ice-thickness uncertainty, and see which questions Europa Clipper can address.
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Infrared Telescopes: Wavelengths, Thermal Background and What Images Reveal
Compare infrared observations through wavelength, sensitivity and resolution, with examples from VISIR and Webb.
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James Webb Space Telescope: How to Read Its Images and Spectra
Read Webb image colors, filters, scale bars and spectra, and trace an astronomical claim back to its observation.
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Nancy Grace Roman Space Telescope: How to Follow and Interpret Its Results
Follow Roman mission updates, understand its surveys and planet detections, and evaluate the evidence, calibration and uncertainty behind its results.
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