McDonald Observatory: Brain Motor

Click to visit our YouTube channel to view this new 15-minute video overview of McDonald Observatory. Narrated by StarDate's Sandy Wood, it discusses our history and the cutting-edge science happening here today.

Finding the Sun's 'Long-lost Brother'

Ivan Ramirez has identified the first “sibling” of the Sun — a star that was almost certainly born from the same cloud of gas and dust as our star. Ramirez’ methods will help other astronomers find other “solar siblings,” work that could lead to an understanding of how and where our Sun formed, and how our solar system became hospitable for life.

Become a Friend of McDonald Observatory

As a member, you can help fulfill our mission of bolstering K–12 education by supporting the programs and resources we provide to teachers and students nationwide. And you'll get great benefits, too!

Regents Authorize $50 Million for UT Austin Share in GMT

The University of Texas System Board of Regents recently authorized UT Austin to spend $50 million to participate in building the Giant Magellan Telescope project, which will be the world’s largest telescope when it’s completed in 2020. The project will give students, researchers and faculty the opportunity to make groundbreaking discoveries in astronomy.

Share Your Story

Visit our interactive blog to share your memories and photos of McDonald Observatory. You can also read others' stories, from today all the way back to the 1930s.

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In the Sky

Oct 22: Solar Eclipse

The afternoon sky will get a little darker than normal for most of the United States tomorrow afternoon during a partial solar eclipse. The Moon will cover part of the Sun’s disk for a few minutes, although the Sun will be too bright to view directly.