Over the past 60 years, humans have begun to explore our solar system in earnest. From the first launches in the late 1950s until today, we've sent probes, orbiters, landers and even rovers (like NASA's Perseverance Rover that touched down on Mars in February 2021) to every planet in our solar system. But can you name all eight of those planets? (Yes, there's only eight – not nine. Pluto got "demoted" in 2006.) And can you put them in the correct order?
In case you're a little rusty, we'll break down some common ways to order the planets plus a few tricks to help you remember them going forward. Let's start with distance from the sun .
N-body population synthesis framework for the formation of moons around Jupiter-like planets |
M Cilibrasi, J Szulágyi, S L Grimm, L Mayer, An N-body population synthesis framework for the formation of moons around Jupiter-like planets, Monthly Notices of the Royal Astronomical Society , 2021;, stab1179, https://doi.org/10.1093/mnras/stab1179
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Astro Bob: Chondrules — stained glass of the solar system | Brainerd Dispatch
This is an artist's view of the young solar system with the newly formed sun at center, surrounded by rings of dusty debris that coalesced through gravity to form the planets, moons and asteroids. (NASA)
Nearly five billion years ago, a local cloud of these cast-offs began to collapse under its own self-gravity to form the sun and solar system. During that process bits of iron, rock and ice collided with each other and stuck together to build larger chunks. These aggregated through gravity into asteroid-like bodies called planetesimals and ultimately into the planets.
Formation Of Earth-sized Planets Within The Kepler-1647 System Habitable Zone - Astrobiology
Orbital plane of the binary pair of the Kepler-1647 system showing its HZ limits. The extended and conservative HZ (Kopparapu et al. 2013a,b) are represented in light and dark green. The figure is centered on the center of mass of bodies (stars and planet). The black stars in the center represent the stars of the system and the point with the white trail the planet Kepler-1647b.
The Kepler-1647 is a binary system with two Sun-type stars (approximately 1.22 and 0.97 Solar mass). It has the most massive circumbinary planet (1.52 Jupiter mass) with the longest orbital period (1,107.6 days) detected by the Kepler probe and is located within the habitable zone (HZ) of the system.
Spectroscopy Infographic – Exoplanet Exploration: Planets Beyond our Solar System
Some telescopes capture starlight shining through the atmospheres of exoplanets. Gases in these atmospheres will block out certain slices of the spectrum in this starlight, in a way that scientists can read like a bar code – a light-sifting method known as spectroscopy.
Could the discovery of this molecule hold the key to finding a 'second Earth'? | Euronews
New research published on Tuesday has uncovered what could be an important clue in understanding if other, unknown planets exist that could be habitable for future generations.
The team, led by scientists at Queen’s University Belfast, discovered the presence of an oxygen-bearing molecule in the atmosphere of WASP-33b, a large exoplanet that orbits a star rather than a sun.
The findings of the study could prove invaluable to future scientists exploring the atmospheres of other undetected small and rocky planets like Earth.
XSEDE Resources Lead to Better Understanding of Jupiter and Saturn
April 26, 2021 — The solar system’s two largest planets, Jupiter and Saturn, received worldwide publicity on December 21, 2020, as they glided closer than they’ve been since 1623. Visible around the globe, “The Great Conjunction” placed the two planets only 0.1 degree apart from one another.
Typically, however, Jupiter and Saturn have been known to “keep their distance” from one another. And, understanding why these two planets have so much space between them was the focus of an Icarus journal article earlier this month.
TOI hot to handle: Scientists discover 'hellish' new planet hotter than lava - Esquire
Watch for Mercury, Venus to be close to Earth | News | bedfordgazette.com
May opens with dawn beginning at about 5:10 a.m., sunrise is at 6:16 a.m., midday is at 1:12 p.m., sunset is at 8:08 p.m. and dusk ends at 9:12 p.m., giving 13 hours and 52 minutes of sunlight that day. The sun is in Aries through May 12, then shifts into Taurus for the rest of the month. The half-full moon appears below the planet Saturn in the southeastern dawn on May 3. At the next dawn, the moon will appear near the bright planet Jupiter.
At the start of May, the two innermost planets are low in the western dusk. Mercury on May 1 sets at about 9:20 p.m., while brilliant Venus sets at about 8:55 p.m. Binoculars and a flat west horizon are essential in seeing the two planets then. On May 13, the crescent moon will be to the right of Mercury. On the evening of May 15, the crescent moon will be below and to the right of the planet Mars. On May 28, Mercury and brilliant Venus will be only one moon width apart.
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