When the moon's in the sky, and Venus goes "goodbye," that's an occultation.
This has been a busy month for the moon. On Jan. 20, it traveled through Earth's deepest shadow to dazzle millions of skywatchers with a total lunar eclipse dubbed the "Super Blood Wolf Moon." And just days into the new year, the moon became host to a new visitor: China's Chang'e-4 lander, the first mission to the lunar far side.
January continues to be a spectacular month for lunar enthusiasts. On the last day of the month (Jan. 31), the moon will occult Venus (or pass in front of), causing the bright planet to temporarily disappear from the night sky for observers across the Pacific. And two days later, on Saturday (Feb. 2), the moon will pass in front of Saturn and the dwarf planet Pluto. [Watch the Super Blood Wolf Moon Turn Red in This Epic Time-Lapse Video!]
The moon will be a waning crescent when it appears to block Venus; according to timeanddate.com, it reached third-quarter phase on Sunday (Jan. 27) and the moon will progressively look smaller as the calendar approaches Feb. 4, when Earth's natural satellite will be invisible in its new moon phase.
Venus is one of the brightest bodies in the sky, and on Thursday, it will shine at about its brightest with an apparent magnitude of minus 4.3.
The island nations in Polynesia will perhaps have the best view of Venus vanishing behind the moon, because in that part of the world, the occultation will happen in the morning around moonset. Western parts of South America, Central America and the southern Caribbean will also be in the path of occultation, but the event will occur in their afternoon.
Below is a timetable for the occultation of Venus by the moon. Additional times are listed here.
|Location||Disappearance of Venus||Reappearance of Venus|
|Bora Bora, French Polynesia||5:51 a.m. Tahiti Time||7:07 a.m. Tahiti Time|
|Hiva Oa, French Polynesia||6:23 a.m. Marquesas Time||8:20 a.m. Marquesas Time|
|San Jose, Costa Rica||1:25 p.m. Central Standard Time||1:33 p.m. Central Standard Time|
|Panama City, Panama||2:11 p.m. Eastern Standard Time||2:51 p.m. Eastern Standard Time|
|Guayaquil, Ecuador||1:54 p.m. Ecuador Time||3:06 p.m. Ecuador Time|
|La Paz, Bolivia||3:13 p.m. Bolivia Time||3:40 p.m. Bolivia Time|
|Easter Island, Chile||12:58 p.m. Easter Island Summer Time||2:07 p.m. Easter Island Summer Time|
Sadly, the lunar occultations of Saturn and Pluto are happening during the daytime. That means their Feb. 2 occultations will be difficult if not impossible to view. Even with high-power telescopes in the darkest places on Earth, Pluto is notoriously difficult to spot.
Further hindering Pluto's visibility, the dwarf planet reached a point in its orbit called solar conjunction earlier this month. This means that it's not only at its farthest distance from Earth, but it appears so close to the sun from our point of view on Earth that the distant dwarf planet is lost in the sun's glare for several weeks, according to in-the-sky.org. The best time to see Pluto this year will be when the dwarf planet reaches opposition on July 14.
This year offers several more opportunities to view the moon passing in front of Saturn. The ringed planet will be at its brightest during occultation on Jun. 19 and Aug. 12, 2019.
Get the Space.com Newsletter
Breaking space news, the latest updates on rocket launches, skywatching events and more!
Doris is a science journalist and Space.com contributor. She received a B.A. in Sociology and Communications at Fordham University in New York City. Her first work was published in collaboration with London Mining Network, where her love of science writing was born. Her passion for astronomy started as a kid when she helped her sister build a model solar system in the Bronx. She got her first shot at astronomy writing as a Space.com editorial intern and continues to write about all things cosmic for the website. Doris has also written about microscopic plant life for Scientific American’s website and about whale calls for their print magazine. She has also written about ancient humans for Inverse, with stories ranging from how to recreate Pompeii’s cuisine to how to map the Polynesian expansion through genomics. She currently shares her home with two rabbits. Follow her on twitter at @salazar_elin.