casts

Jupiter’s big moon Ganymede casts giant shadow in stunning Juno photo by citizen scientist

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A powerful new picture of Jupiter posted by a citizen scientist shows the planet looming large with the shadow of its biggest moon Ganymede blanketing its clouds. The image comes from Kevin M. Gill, who posted copies on Twitter and Flickr  after analyzing data from the Juno spacecraft’s 20th close flyby of May 2019. Like … Read more

New Result Casts Doubt on ‘Cosmic Dawn’ Claim

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The first major attempt to replicate striking evidence of the ‘cosmic dawn’—the appearance of the Universe’s first stars 180 million years after the Big Bang—has muddled the picture. Four years after radio astronomers reported finding a signature of the cosmic dawn, radio astronomer Ravi Subrahmanyan and his collaborators describe how they floated an antenna on … Read more

For NASA, a somber ‘Day of Remembrance’ casts spotlight on astronaut safety to avoid tragedies

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NASA leaders emphasized the importance of safety and having an inclusive culture in a discussion held during the agency’s annual Day of Remembrance to honor fallen astronauts. The televised safety panel on Thursday (Jan. 27) ran after a series of commemorative events at NASA centers across the country. Participants included NASA Administrator Bill Nelson, Deputy … Read more