2019-04-01_Astronomy

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HOW TO PHOTOGRAPH AURORAE p. 56 EXCLUSIVE INTERVIEWS APOLLO 9 50 YEARS LATER Rusty Schweickart remembers p. 22 Jim McDivitt: ...

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CONTENTS News The latest updates from the science and the hobby. Sky This Week A daily digest of celestial events. Picture of th ...

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ASTROLETTERS 8 ASTRONOMY • APRIL 2019 Exploration overshadowed I’m embarrassed to say that I knew noth- ing about the BepiColomb ...

QG QUANTUM GRAVITY EVERYTHING YOU NEED TO KNOW ABOUT THE UNIVERSE THIS MONTH... HOT BYTES >> TRENDING TO THE TOP WWW.ASTRO ...

ASTRONEWS To ta l^ v ol um e Earth Ganymede Titan Enceladus 0.12% 46 % 26 % 16 % 20 % Europa Liquid water A 10 ASTRONOMY • APRIL ...

ASTRONEWS WWW.ASTRONOMY.COM 11 Hubble homes in on orphaned stars About 2.6 million years ago, an exploding star lit up Earth’s s ...

12 ASTRONOMY • APRIL 2019 D id you ever have that lost-at-school dream? You know, the one where you’re in the crowded hallway wi ...

ASTRONEWS FAST FAC T 2,080 feet tall (634 meters) 1,670 feet wide (510 meters) 3,000 feet wide (900 meters) 1,454 feet tall (443 ...

ASTRONEWS 14 ASTRONOMY • APRIL 2019 S hortly after the stroke of midnight on New Yea r’s Day, NASA’s New Hor i z ons mission mad ...

WWW.ASTRONOMY.COM 15 Confi guration. Optimization. Expertise. cloudbreakoptics.com ...

ASTRONEWS Irregular Normal spiral Lenticular Elliptical Barred spiral 46 % 24 % 15 % 5 % 10 % Spiral (^70) % 16 ASTRONOMY • APRI ...

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18 ASTRONOMY • APRIL 2019 Dave: Good morning, HAL. I’d like to look at the possibili- ties for a lunar rover to extend surveys f ...

ASTRONEWS WWW.ASTRONOMY.COM 19 QUARK SOUP. Physicists created ultra-hot droplets of the quark-gluon plasma (QGP) that filled the ...