Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Blogs

Blog Posts by Amir Alexander

The Discovery of a Planet, Part 3: Planet X

Posted by Amir Alexander on 2005/02/14 11:00 CST

The discovery of Neptune accounted for nearly all the unexplained motions of the outer planets of the Solar System. Nevertheless, several astronomers insisted that some unexplained residual motions remained, pointing to the presence of a ninth planet beyond the orbit of Neptune.

Read More »

The Discovery of a Planet, Part 2: Out of the Six-Planet World

Posted by Amir Alexander on 2005/02/13 11:00 CST

Since humans first set their eyes to the stars, they noticed that a few of these bright objects behaved differently from the others. Whereas all the stars moved together, revolving around the Earth once every 24 hours, five appeared to move within the firmament among the other stars. Accordingly, they were named “planets,” meaning “wanderers” in Greek.

Read More »

The Discovery of a Planet, Part 1: The Blinking Image

Posted by Amir Alexander on 2005/02/12 11:00 CST

February 18, 1930, was a cloudy day at the Lowell Observatory, on top of Mars Hill in Flagstaff, Arizona. 22 year old Clyde Tombaugh was hard at work, peering through the lens of an ancient-looking brass-colored device. The instrument, known as a “blink comparator,” mounted two large photographic plates.

Read More »

Descent Imager Spectral Radiometer (DISR)

Posted by Amir Alexander on 2005/01/10 10:00 CST

The Descent Imager Spectral Radiometer crams six sub-instruments into a tiny footprint within the Huygens probe.

Read More »

IBM's World Community Grid: A New SETI@home-Inspired Venture

Posted by Amir Alexander on 2004/11/24 11:00 CST

As SETI@home has demonstrated, untold millions around the world are ready and eager to donate their computer time for the advancement of knowledge and the benefit of humankind. The story of distributed computing is only just beginning.

Read More »

Scientists from Different Fields Line Up to Join the BOINC Family

Posted by Amir Alexander on 2004/08/24 12:00 CDT

BOINC stands for the “Berkeley Online Infrastructure for Network Computing.” Its purpose is to spread the credo of distributed computing beyond SETI@home, by making it easy for researchers in all fields to launch their own projects, and tap into the enormous computing capacity of personal computers around the world.

Read More »

Multi-Beam Receiver Promises New Vistas for SETI Research

Posted by Amir Alexander on 2004/08/04 12:00 CDT

Faster and more regular sky surveys, at an increased sensitivity and broader bandwidth, will push the boundaries of SETI to new and unexplored territories.

Read More »

Pulses, Triplets, and Gaussians: Rescoring the Reobservations

Posted by Amir Alexander on 2004/05/17 12:00 CDT

It has been more than a year since the SETI@home crew spent a hectic week at Arecibo, pointing the giant radio telescope at some of SETI's most promising targets. Much of the data collected during the reobservations has since been repackaged as work units, and sent out to users around the world for analysis.

Read More »

Mars Exploration Rovers Update: Spirit Too Finds Traces of Water

Posted by Amir Alexander on 2004/03/05 11:00 CST

Four days after scientists announced that rocks examined by the rover Opportunity in Meridiani Planum were once soaked with water, Opportunity's twin Spirit made some headline news of its own. In a press conference this morning at the Jet Propulsion laboratory in Pasadena, Dr. Ray Arvidson, Deputy Principal Investigator for the rovers, announced that Spirit had discovered the telltale signs that some amount water had once been present in Gusev Crater as well.

Read More »

Mars Exploration Rovers Update: Spirit Breaks More Records; Opportunity Digs a Trench

Posted by Amir Alexander on 2004/02/17 11:00 CST

Mars driving records are falling at Gusev Crater, as the rover Spirit continues its steady progress towards the nearby crater nicknamed "Bonneville." On Sol 43, which ended on the morning of Monday, February 16, Spirit drove 19 meters (62.3 feet) in the morning and another 8.5 meters (27.9 feet) in the afternoon. The total drive of 27.5 meters (90.2 feet), breaks the Mars one day drive record of 24.4 meters (80 feet), set by Spirit only 7 sols ago. The previous record holder Sojourner, rover of the 1997 Mars Pathfinder mission, had managed no more than 7 meters (23 feet) in a single sol.

Read More »

Items 31 - 40 of 52  Previous123456Next
Facebook Twitter Email RSS AddThis

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Us

Infinite Visions

Are you a #SpaceFan?

We have infinite visions, but together, we share one powerful voice as The Planetary Society. Share your vision using #SpaceFan.

View Responses

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!