SKY_September2014.pdf

SkyandTelescope.com September 2014 21 Mars is less than 1% of that at sea level on Earth, equivalent to being in our stratospher ...

22 September 2014 sky & telescope Winged Time Traveler planetary scientists expected to fi nd widespread carbonate deposits ...

SkyandTelescope.com September 2014 23 away. Instead, it’ll fi nd out how the various ways of losing atmosphere work and interact ...

Winged Time Traveler lest the drag forces act as aerobraking and alter its orbit. The denser atmosphere might also facilitate sp ...

SkyandTelescope.com September 2014 25 One way to imagine these fi elds is to think of big mag- netic bubbles sticking up from th ...

26 September 2014 sky & telescope Winged Time Traveler hundred million years — one doozy of a smash might have excavated the ...

For 24 years, The Great Courses has brought the world’s foremost educators to millions who want to go deeper into the subjects t ...

28 September 2014 sky & telescope Astronomical Experiment Reliving The authors observed the 2012 transit of Venus to replica ...

SkyandTelescope.com September 2014 29 Histor y Earth N Seen from Washington Seen from Maui S Sun Venus Not to scale Edmond Halle ...

30 September 2014 sky & telescope Astronomical Experiment ing the times of second and third contact from widely separated lo ...

SkyandTelescope.com September 2014 31 At 6:25 p.m., he was elated to see sunlight inside his house. Looking outside, he saw the ...

32 September 2014 sky & telescope Astronomical Experiment Using MaxIm DL’s Graph Function, the average diameter of Venus’s d ...

SkyandTelescope.com September 2014 33 on the individual parallaxes of Venus and the Sun. Any errors in the fi nal results will b ...

34 September 2014 sky & telescope Clear Eyes IMAGINE SMEARING VASELINE all over your primary mirror, then smashing it into s ...

SkyandTelescope.com September 2014 35 What Is a Cataract? diff raction spike is, they might not notice the new ones in their fi ...

36 September 2014 sky & telescope Clear Eyes the new lens showed a huge diff raction spike around every streetlight and porc ...

SkyandTelescope.com September 2014 37 biggest capsulotomy that he could make without endan- gering her eye or the artifi cial le ...

38 September 2014 sky & telescope the old saying “you get what you pay for.” Although it’s often the lament uttered for the ...

SkyandTelescope.com September 2014 39 PlaneWave 12.5-inch CDK telescope (S&T: Nov. 2010, p. 36). As a commercial product, th ...

40 September 2014 sky & telescope S&T Test Report From the moment of “fi rst light,” I realized that mechanically this s ...