Retired physicist, teacher, meteor scientist. 3M teaching fellow. Father, grandfather. Mt A, Western alum. Textbook author. Views those of invisible rabbit.
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ALT Earthset captured through the Orion spacecraft window during the Artemis II crew's flyby of the Moon. A muted blue Earth with bright white clouds sets behind the cratered lunar surface. The dark portion of Earth is in nighttime. Credit: NASA
ALT A crisp image of Earth illuminated against black space taken by an Artemis II crew member through the Orion spacecraft window. Credit: NASA
ALT A sliver of the edge of Earth glows blue against the vast darkness of space. Credit: NASA
ALT Earth as a thin arc glowing in the darkness of space. Sunlight traces the curves of the ocean and clouds, while the rest of the planet fades into shadow. Credit: NASA
ALT Diagram showing the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. Planetary orbits are depicted as colored circles around the Sun, with the comet’s path shown as a white arc entering from the bottom left and exiting toward the top right. Labels mark the orbits of Jupiter, Mars, Earth, and the Sun, with 3I/ATLAS making its closest approach to the Sun in October.
