Astronomy

217 Prepare for totality with these eclipse-ready products from MyScienceShop.com. You’ll be all set to fi nd the best viewing l ...

22 ASTRONOMY • SEPTEMBER 2017 Pluto displays a rich geological diversity that few planetary scientists expected before New Horiz ...

T Far from the inert ball of ice some scientists expected, this distant world boasts unique landscapes, recent geological activi ...

24 ASTRONOMY • SEPTEMBER 2017 overarching results that stand out from the first exploration of Pluto. Unique landforms One of th ...

WWW.ASTRONOMY.COM 25 launched material into orbit around Pluto that then accumulated to form Charon. Early clues supporting this ...

26 ASTRONOMY • SEPTEMBER 2017 of this renewal process. But the evidence for temporal change on SP goes well beyond that. In fact ...

WWW.ASTRONOMY.COM 27 and volumes that are, in some cases, even larger than Earth’s. Evidence for these oceans was once only theo ...

28 ASTRONOMY • SEPTEMBER 2017 IT’S BEEN A WILD RIDE. NASA’s Cassini Saturn orbiter has broken just about every record in the pla ...

WWW.ASTRONOMY.COM 29 Saturn. The valiant explorer’s immolation is pre-planned. Flight engineers will con- trol the spacecraft so ...

Earth Ring-grazing orbits Grand Finale orbits Final orbit Ring and planet occultations Titan’s orbit Earth Ring- grazing orbits ...

WWW.ASTRONOMY.COM 31 the Voyager imaging team. For her, some of the greatest insights from the mission involve revelations about ...

32 ASTRONOMY • SEPTEMBER 2017 giant dish as a shield from incoming ring debris. But once engineers were confident that ring part ...

WWW.ASTRONOMY.COM 33 wobble — if there is any — has been too subtle to see before now. Researchers hope that as Cassini f lies t ...

34 ASTRONOMY • SEPTEMBER 2017 It’s never aliens. Until it is. That’s been the story for the nearly 60 years the Search for Extra ...

WWW.ASTRONOMY.COM 35 ...

1° AQUARIUS o q r s s s h g m Neptune N E Neptune’s Labor Day special 36 ASTRONOMY • SEPTEMBER 2017 Visible to the naked eye ...

10° TAURUS AURIGA GEMINI ORION URSA MAJOR Aldebaran Radiant Capella Castor Venus Pollux Procyon Betelgeuse Rigel September 1, 4 ...

CORONA AUSTRALIS TELESCOPIUM SCUTUM LACERTA LY R A VULPECULA SAGITTA AQUILA DELPHINUS EQUULEUS AQUARIUS CAPRICORNUS CYGNUS MICRO ...

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PATHOF THE PLANETS The planets in the sky These illustrations show the size, phase, and orientation of each planet and the two b ...