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David Callejas

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January 20, 2019

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Victor Rogus
Sedona, Arizona, USA

03/24/2022
10:10 am

Image Details:

This big new sunspot group (2975) is emerging over the sun's northeastern limb. It is crackling with C-class solar flares and could soon pose a threat for stronger M-flares. With a primary dark core twice as large as Earth, the sunspot is an easy target for backyard solar telescopes.

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January 20, 2019

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David Callejas

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David Callejas, Marketing Director, helps bring EarthSky's content to the world via online ads and other products. He creates strategies that help people around the world find us and appreciate the work we do. He helps manage the EarthSky Store and bring to you the new products that you love. He's the chief liaison between EarthSky.org and the world of commerce. All that, plus he helps post content and populate our pages on Facebook, Google+ and Twitter. Go David!