Kosmosest is a newsletter covering the highlights of space exploration and astronomy, digestible bites of complex topics, and a peek into the backstage of learning about our universe. Brought to you by Mari-Liis Aru, an astrophysics researcher and science communicator.

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A selection of newsletter issues

Begin here ⤵️

Learn about…

Telltale signatures of newborn stars ⤵️

The Artemis mission reviving human lunar exploration ⤵️

Gravitational lensing ⤵️

The mission that changed the path of an asteroid ⤵️

Gravitational waves ⤵️

‼️ Paid subscribers get more frequent updates ⤵️

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Cover image: Close-Up of the Helix Nebula. NASA, NOAO, ESA, the Hubble Helix Nebula Team, M. Meixner (STScI), and T.A. Rector (NRAO)

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Highlights and explainers from the world of space exploration and astronomy, brought to you by an astrophysics researcher.


Astrophysicist explaining complex topics in a digestible way. 💬 Given my education and experiences in space sciences, I aim to bring space closer to a broad audience. 👩‍💻 I share helpful resources for aspiring scientists and first-gen students.