Diagram of the occultation viewed from Chicago, IL.
Click on image for full size
Courtesy of the International Occultation Timing Association
Rare Occultation of Regulus!
News story originally written on May 13, 1999
An occultation of the star Regulus can be seen on May 21-22, 1999. A repeat of such a spectacular event will not occur again until the next century. Most of the United States, Mexico and Canada will have a great view. However, the extreme western part of the continent may be inhibited by daylight.
An occultation is a type of eclipse. In this case, the first-quarter moon will completely cover the star, hiding it from view.
Regulus, the brightest star in the constellation Leo, will be visible on the left side of the moon. Exact times according to location are listed on the link below, along with other information on the moon and occultation.
The public is encouraged to record the event. The International
Occultation Timing Association (IOTA) will be interested in your videotape for future studies. Scientists plan to use the event to study climate.
Shop Windows to the Universe Science Store!
Our online store
includes issues of NESTA's quarterly journal, The Earth Scientist
, full of classroom activities on different topics in Earth and space science, as well as books
on science education!
You might also be interested in:
An eclipse of the Sun occurs when the Earth passes through the Moon's shadow. A total eclipse of the Sun takes place only during a new moon, when the Moon is directly between the Sun and the Earth and...more
It was another exciting and frustrating year for the space science program. It seemed that every step forward led to one backwards. Either way, NASA led the way to a great century of discovery. Unfortunately,...more
The Space Shuttle Discovery lifted off from Kennedy Space Center at 2:19 p.m. EST, October 29th. The sky was clear and the weather was great as Discovery took 8 1/2 minutes to reach orbit for the Unitied...more
A moon was discovered orbiting the asteroid, Eugenia. This is only the second time in history that a satellite has been seen circling an asteroid. A special mirror allowed scientists to find the moon...more
Will Russia ever put the service module for the International Space Station in space? NASA officials are demanding an answer from the Russian government. The necessary service module is currently waiting...more
During a period of about two days in early May, 1998, the ACE spacecraft was immersed in plasma associated with a coronal mass ejection (CME). The SWICS instrument on ACE, which determines unambiguously...more
J.S. Maini of the Canadian Forest Service has referred to forests as the "heart and lungs of the world." Forests reduce soil erosion, maintain water quality, contribute to atmospheric humidity and cloud...more