Commerce, Texas —The Texas A&M University-Commerce Planetarium invites the public to an open house on Tuesday, June 5  at 5 p.m. to observe an extremely rare chance to watch the planet Venus in transit while it crosses the face of the Sun. This opportunity will not occur again for 105 years.

The transit will begin at approximately 5:09 p.m. and will continue until well after sunset. Viewers will be able to observe a black dot traveling across the bright disk of the Sun. Since a special device or filter is needed to avoid damaging the eyes, the observatory will be providing telescopes with specially designed filters to make viewing possible.

“Transits of Venus across the Sun were once considered to be of great importance to science, and huge efforts were expended trying to record them,” said Dr. Kent Montgomery, planetarium director and professor of astronomy. “The explorer James Cook was sent to Tahiti in 1769 to record the times of this phenomenon. The primary purpose of the observation of the transit of Venus was to obtain measurements that could be used to calculate more accurately the distance of Venus from the Sun. If this could be achieved, then the distances of the other planets could be worked out, based on their orbits. During his voyage Cook also observed a transit of Mercury.”

It will take Venus more than six hours to cross the face of the Sun, but from Texas only the first half of the transit will be visible before the sun sets.

This event is open to the public and is free to attend. The open house will begin at 5 p.m. and will continue until after dark.

For directions to the observatory and more information about the planetarium, go to: http://web.tamu-commerce.edu/communityOutreach/planetarium/observatory.aspx.

About Texas A&M University-Commerce: Founded in 1889, Texas A&M University-Commerce is a member of The Texas A&M University System.  Located in Northeast Texas, A&M-Commerce is home to more than 11,000 students, four academic colleges, a thriving graduate school, and more than 100 degree programs.  As the region’s focal point of higher education, A&M-Commerce offers students facilities ranging from a world-class science building and new student center, to a fully equipped recreational facility and recently completed music hall.  The university also has convenient facilities in Corsicana, Midlothian, Mesquite, and downtown Dallas.

About The Texas A&M University System: The A&M System is one of the largest systems of higher education in the nation, with a budget of $3.3 billion. Through a statewide network of 11 universities, seven state agencies and a comprehensive health science center, the A&M System educates more than 120,000 students and makes more than 22 million additional educational contacts through service and outreach programs each year. Externally funded research expenditures exceed $730 million and help drive the state’s economy.