Topic: Ivan Ramirez

Astronomers Find Sun's 'Long-Lost Brother,' Pave Way for Family Reunion

May 8, 2014

A team of researchers led by astronomer Ivan Ramirez of The University of Texas at Austin has identified the first "sibling" of the sun a star almost certainly born from the same cloud of gas and dust as our star.

Read more

N.Y. Times focuses on McDonald Observatory

Nov. 29, 2007
N.Y. Times focuses on McDonald Observatory

The Greeks believed that the Helios, the sun god who drove a chariot across the sky, had two siblings: Eos, the goddess of the dawn, and Selene, the goddess of the moon.

Read more

Astronomers Discover Sun's Twin at McDonald Observatory

Nov. 9, 2007

Peruvian astronomers Jorge Melendez of The Australian National University and Ivan Ramirez of The University of Texas at Austin have discovered the best “solar twin” to date, using the 2.7-meter Harlan J. Smith Telescope at McDonald Observatory. Their findings suggest that the Sun’s chemical composition is not unique, as some previously thought.

Read more