Astronomy - USA 2021-04)
WWW.ASTRONOMY.COM 21 scientists to triangulate dis- tances and obtain even more accurate mass estimates. The team believes that ...
22 ASTRONOMY • APRIL 2021 there is one — from a back- ground star as their motions through the galaxy separate them on the sky. ...
WWW.ASTRONOMY.COM 23 was mocked by the world’s top astronomers. But Henrietta Leavitt’s dis- covery in 1908 that the pulse of va ...
24 ASTRONOMY • APRIL 2021 The Rubin Observatory and Roman Space Telescope are poised to ref lect the accomplishments of their na ...
WWW.ASTRONOMY.COM 25 C hanging your name is not a decision to be taken lightly. So when two of the most powerful and revolutiona ...
26 ASTRONOMY • APRIL 2021 Both namesake women were towering figures in their respec- tive fields of study. Vera C. Rubin produce ...
O b se rv at ion s^ f rom sta rlight GALACTIC ROTATION CURVE V e lo ci ty ( k m /s ) 100 150 0 50 Distance (light-years) 10,000 ...
28 ASTRONOMY • APRIL 2021 Shaping NASA astronomy While Rubin looked at galaxies, Roman focused on the characteristics of stars w ...
WWW.ASTRONOMY.COM 29 The Roman Space Telescope Planned to launch in the mid-2020s, Roman’s namesake space-based telescope will f ...
30 ASTRONOMY • APRIL 2021 to Cornell University, where he worked toward his Ph.D. while she pursued a master’s degree. After two ...
WWW.ASTRONOMY.COM 31 to her groundbreaking discovery of dark matter. Roman moved from Yerkes to spend three and a half years at ...
Visible to the naked eye Visible with binoculars Visible with a telescope 2° April 25, 11 P.M. EDT E N ORION TAURUS GEMINI ¡ c d ...
10° SAGITTARIUS CEPHEUS PEGASUS CYGNUS AQUILA LYRA HERCULES CAPRICORNUS OPHIUCHUS Vega Deneb Altair Jupiter Saturn Radiant April ...
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123 45678910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 SUN. MON. TUES. WED. THURS. FRI. SAT. APRIL 2021 Pa th ...
ARI CET FOR SCL GRU PsA AND TRI PEG SGE LAC AQR MIC CrA SGR SCT AQL SER LY R CYG VUL ANT CRT HYA LEO LMi UMa SCO OPH HER CEN CRV ...
PSC CET SCL FOR CAE ERI CAS AND TRI ARI PER AUR TAU ORI COL LEP LY N GEM CNC CMi CMA MON PUP PYX Early evening Sun Mercury Venus ...
1' Titan Mimas Saturn Enceladus Rhea Te t h y s Iapetus Hyperion Dione April 16, 6 A.M. EDT W S 5° ¡ VULPECULA AQUILA OPHIUCHUS ...
2° April 1^5101520 25 30 E N 51 LEO Denebola Chertan Zosma^60 f Path of Vesta M95 M96 M105 M66 NGC 3628 M65 10° April 6, 1 hour ...
40 ASTRONOMY • APRIL 2021 SEE SPRING’S BEST Messier objects Here’s a list of 25 targets to help you make the most of your evenin ...
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