On Tuesday, July 13, 2021, Mars and Venus will appear to be just 0.5º from each other, as seen from ... [+] Earth.
The "Evening Star" and the "Red Planet"—the planets of love and war, respectively—are about to "meet" during dusk in one of the planet-gazing highlights of the year.
Mysterious Population of Rogue Planets Spotted Near the Center of Our Galaxy
Tantalizing evidence has been uncovered for a mysterious population of "rogue" (or "free-floating") planets, planets that may be alone in deep space, unbound to any host star.
The study, led by Iain McDonald of the University of Manchester, UK, (now based at the Open University, UK) used data obtained in 2016 during the K2 mission phase of NASA's Kepler Space Telescope.
Multiple Earth-Mass Rogue Planets Have Been Discovered Drifting Through the Milky Way - Universe
Both collecting and analyzing the data used in the study wasn't easy though. Kepler embarked on a two-month campaign in 2016 that had it looking at millions of stars located near the center of the Milky Way every 30 minutes. Even with that much data, picking the signal from the noise was
They are difficult because microlensing is exhibited by tiny fluctuations in the light of stars when an object passes in front of them. According to Dr. McDonald, about every one in a million stars in the galaxy is subject to microlensing at any point in time.
Astronomers see an Accretion Disk Where Planets are About to Form - Universe Today
Planet formation is notoriously difficult to study. Not only does the process take millions of years, making it impossible to observe in real time, there are myriad factors that play into it, making it difficult to distinguish cause and effect.
The research is described in two new papers in The Astrophysical Journal. They describe the star system Elias 2-27, which is located about 400 light years from Earth in Ophiuchus , the Serpent Bearer.
From Dust to Planets I: Planetesimal and Embryo Formation | Monthly Notices of the Royal
Gavin A L Coleman, From Dust to Planets I: Planetesimal and Embryo Formation, Monthly Notices of the Royal Astronomical Society , 2021;, stab1904, https://doi.org/10.1093/mnras/stab1904
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That’s no planet! It’s one to five moons. | astrobites
First Author's Institution: Academia Sinica Institute of Astronomy and Astrophysics, Taipei, Taiwan
On Earth, we only have one moon. However, most solar system planets have many more. From Mars' 2 to Saturn's 82 (known) moons, all planets exterior to Earth have multiple moons . But, what about planets orbiting other stars?
Happening on Twitter
Here are your skywatching tips for July. Venus shines bright as the "Evening Star" after sunset. You'll see a super… https://t.co/QeNOx1UPmh NASAJPL (from Pasadena, Calif.) Thu Jul 01 17:46:38 +0000 2021
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