mayo 22, 2026

Find Out How Ganymede Got Its Molten Core and What Feeds the Milky Way's Supermassive Black Hole

Having trouble viewing this email? {Click here to read it on the Web.}

Subscribe to Sky & Telescope Magazine to receive full access to the articles below.

Visit our FAQ page to learn more.

This week in the world of astronomy, find out what feeds the Milky Way's supermassive black hole and how Ganymede melted its core. Plus, uncover the mysteries hidden in the stones of Stonehenge.

Moon_first-quarter_10-pm-EDT-May-23-2026_NASA-Visualization_FEATURED image

This Week's Sky at a Glance, May 22 – 31

Venus and Jupiter draw closer in twilight, and this week they point to Mercury. The waxing Moon shows off rich telescopic detail.

What's Feeding Our Supermassive Black Hole?

Astronomers have identified the likely source of gas that flows into the maw of the Milky Way’s central black hole, Sagittarius A*.

SMILE: European Space Weather Mission Launches

An innovative new mission will probe the mystery of how the Earth’s magnetosphere interacts with the solar wind.

How Jupiter’s Moon Ganymede Melted Its Core

A new model explains how Ganymede got its molten core — which in turn has given Jupiter’s largest moon its magnetic field.

Visit Shop @ Sky for Atlases, Globes, and More!

Observing Highlights

ART5_LightEchoes_Page_1_Image_0001 image

Imaging Supernovae: Illuminate Echoes of Light

Here's how to reveal the reflected light of stellar explosions photographically.

May Podcast: The Delightful Dippers

This month’s episode showcases the Big and Little Dippers, now placed high in the northern evening sky. So grab your curiosity, and come along on this month’s Sky Tour.

Presented by: Celestron.

Ventura County Astronomical Society Monthly Lecture series

VCAS brings Astronomy, Space and Science to Ventura County monthly. They meet the 2nd Friday night of every month at 7:00 p.m.

Stonehenge and the Geometry of the Sky

For most of human history, the sky was not something we studied — it was something we lived with.

The Nation’s Premier Amateur Astronomy Conference

August 12-15

This year’s ALCON is stacked with great activities. Astronomy presentations, happy hours, tours, the annual StarBQ, an astrophotography contest, and even a Sunday afterparty. All these events are available at this year’s ALCON in Cincinnati, space is limited, learn more at ALCON2026.org.

From a trusted S&T partner