A Sparkling Universe at Air + Space

By the Queen of Free

Most of the lecture was over my head, but the delivery and visuals were fascinating, informative, and beautiful.

Did you know that one of the goals of the International Year of Astronomy (did you know it is celebrated this year?) is to have "everyone" (i.e., everyone) look through a telescope? It is one means to commemorate "400 Years of the Telescope" which happened to be the title of an intriguing film presented last Thursday night at the National Air and Space Museum preceding a talk by Dr. Sandy Faber, "The Milky Way: Why We Need Her (her?) and How She (she?) was Formed." (Is this like hurricanes which used to be perpetual "she's"?)

Had standing room been available, that's what it would have been at the IMAX theatre which was loaded to the universe with young and old for the event. We had to squeeze in tightly to fit everyone in. (It was heavenly seeing so many turn out for a female scientist.)

However, the constant seating of latecomers and the chatter by the staff marred the screening of the film and the Q + A before Dr. Faber's lecture which made it difficult to hear everything. Please, Air and Space: Do not seat latecomers and interrupt the presentations!

Anyway, the Smithsonian official (did not catch his name since it was hard to hear) who introduced Dr. Faber actually quoted Wikipedia, providing more credence to the online encyclopedia. Imagine, a scientist with a Ph.D. uttering “Wikispeakia” out loud. Saying he consulted it. Yeeks!

In a Q+A session before the lecture, Dr. Faber said a tough part of her math studies was "complex variables." Hmmmmm. "We are the children of 'quantum fluctuation,'" she noted. Hmmmmm.

In her unassuming, down-to-earth manner, Dr. Faber said the Milky Way is a band, not curved as photographs commonly suggest. Because of city lights, many have never seen it. The Milky Way is best seen from the Southern Hemisphere.

More facts from Dr. Faber: The universe began about 14 billion years ago with the “Big Bang.” Our sun and planets are about 4.6 billion years old. No two galaxies are alike. Spiral galaxies are flat. Except for dust, stars are very far apart.

The light from the Milky Way is 100,000 light-years across! To shed light on a light year, Dr. Faber mentioned the sun's light takes 8.5 minutes to reach Earth; Jupiter's light is 40 minutes away. (In lay terms, a light-year is the distance light travels in a year or approximately, quoting Wikipedia now, ahem, almost 5.9 trillion miles a year (300,000 kilometers/second). Reflected light from the moon reaches Earth in 1.2 to 1.3 seconds.)

The accompanying film and photographs she presented made you feel like you were peering out from a wide convex front window of a space ship that you calmly steered at a cool trillion MPH while floating and zooming through the Andromeda Galaxy and the Orion and Crab nebulae. (Actually, we would have been going much faster.)

There now, do you have an idea about the size of the Milky Way?

Did I get everything right? No? You are invited to make corrections and/or additions, too.

The lecture was part of the third annual John Bahcall Lecture Series made possible by the Space Telescope Science Institute and the Hubble Space Telescope Program at the Goddard Space Flight Center. Dr. Faber is from the University of California, Santa Cruz. Thanks to all the sponsors for a gorgeous, enlightening evening! (Some information was received; better than none!)