A Disappearing Star!

A spectacular and rare celestial occultation is scheduled to happen on the late night of March 20th for selected readers of this column.  It’s nothing less than the brief disappearance of the well-known first-magnitude star Regulus in Leo, the Lion—and with it, disruption of its well-known “sickle” asterism marking the head of the Lion!


California of the Skies

Due to its great brilliancy and richness, the great French astronomy popularizer Camille Flammarion was fond of calling the winter constellation Orion the "California of the Sky." Aside from the Big Dipper itself, perhaps no other star grouping in the entire heavens is as well known. And it’s at its glorious best on February evenings. …


Who Invented the Telescope?

Nothing gets the attention of a stargazer like hearing the word "telescope" mentioned. This wonderful device makes it possible to journey through space and time without ever leaving home. And as several of the astronauts themselves have said, looking through one is the next best thing to actually being out there! But where did it …


Comet ISON’s Dawn Spectacle – Part II

================== UPDATE: Comet ISON, a "shining green candle in the solar wind," is no longer with us, NASA declared Monday morning December 3 in a tribute to what many hoped would be "the comet of the century." ================= We continue our coverage from last month’s installment of what’s being heralded as the "Comet of the …


Comet ISON’s Dawn Spectacle – Part I

A bright new comet is on its way to gracing the pre-dawn morning sky toward the end of November and promises to put on quite a show during the first few weeks of December.  Due to the time frame involved—and its potential for becoming the “Comet of the Century” as it’s being widely heralded—we’re devoting …


Coming of the Martians!

Image courtesy of www.orsonwelles.co.uk October for most of us means the real beginning of the fall season, with its lower humidity, cooler temperatures, lovely turning of the leaves, and beautifully clear nights for stargazing. It’s also the month of Halloween. For me, mention of October and this popular holiday mean something else as well—it takes …


Return Flight from the Moon

On July 20, 1969, the Apollo 11 reached the Moon. Millions watched as Neil Armstrong and Buzz Aldrin took their first steps on the surface. The United States had reached the Moon before the Soviet Union, and the first part of President Kennedy’s objective to the nation, of “landing a man on the moon and …


Time Capsule in the Stars: Exploring Voyager 1’s Golden Record

Earlier this month, NASA announced that the Voyager 1 probe had successfully entered interstellar space; the first human-made object to do so. As the probe continues forth into the vast unknown, it carries with it a special collection of “welcome signs” for any life forms it may encounter. Known as the Voyager Golden Record, this …


Carving the Milky Way: How Bathsheba Grossman Mixes Science and Art in Laser Etching Designs

One’s first encounter with the Milky Way Galaxy Star Crystal may leave almost as much wonder as seeing NASA’s images of the galaxy itself; a bright, swirling mass of tiny bright dots hovering in a vacuum, or in this case a block of solid crystal. California artist Bathsheba Grossman has made a career for herself …


Twilight Lunar & Planetary Parade

Mark the three evenings of September 7th, 8th and 9th on your calendar to watch a fascinating interplay of the crescent Moon and two bright planets in the southwestern sky after sunset. And later in the month, another planet joins the parade. All of this will provide yet another example of the fact that the …