EarthSky | Mars in 2022: Earth flies between Mars and sun December 7-8


As seen from above the solar system on the evening of December 7-8, 2022, the sun, Earth, moon and planet Mars make an approximate line in space right now. It’s the evening of Mars’ once-in-2-years opposition – when it’s reverse the sun in our sky – rising within the east because the sun sinks beneath the western horizon. Plus, from Earth that evening, we see a full moon. And – as a bonus – the moon will cover Mars on December 7-8, blotting it quickly from view, in an occasion referred to as an occultation by astronomers. Wow!

Mars in 2022

Opposition for Mars will fall at 6 UTC on December 8, 2022 (midnight CST on the evening of December 7-8).
Learn how to see Mars within the sky: At opposition – as Earth flies between Mars and the sun, putting Mars reverse the sun in our sky – Mars rises within the east at sundown, attain its highest level round midnight and units at daybreak. How are you going to acknowledge it? For one factor, it’s brighter than even the brightest stars. And it’s noticeably crimson in coloration. However there’s a fair higher strategy to establish Mars on the evening of December 7-8. That evening, Mars shouldn’t be solely at opposition, but in addition close to December’s full moon. When you look and don’t see Mars close to the moon, that is likely to be as a result of the moon is in entrance of Mars! Read about the December 7-8 occultation of Mars.
Mars was closest to Earth at 2 UTC on December 1, 2022 (8 p.m. CST on November 30). At its closest, Mars was 4.5 light-minutes from Earth.
At opposition in 2022, Mars’ constellation is in entrance of the constellation Taurus the Bull.
Its opposition brightness is magnitude -1.9 (most brightness for 2022). At this level, though Mars is brighter than all the celebs, it nonetheless gained’t be as as vibrant as Venus or Jupiter.
By way of a telescope, at opposition, Mars will seem 17.01 arcseconds throughout. Main options on Mars will present floor coloration, plus Mars’ white polar cap will likely be seen.
Notice: Mars reaches opposition solely about each 26 months. This 2022 opposition could be very particular as a result of – as seen from all over the world – the moon will seem close to Mars within the sky. From some areas, together with components of North America and Europe, the moon cross in entrance of Mars on the identical evening as opposition, December 7-8.

Read: Moon occults Mars on December 7-8

Read: December full moon mimics the June sun

Available now! 2023 EarthSky lunar calendar. A unique and beautiful poster-sized calendar showing phases of the moon every night of the year. Makes a great gift!

The place to look at Mars opposition and occultation on-line

Poster for online observation of Mars occultation.
The Digital Telescope Venture, based mostly in Rome, Italy, will host a web based observing occasion exhibiting the Mars occultation to folks worldwide. Details on Virtual Telescope’s event here.

Finder chart

2 positions of Mars along green slanted line of ecliptic and Aldebaran, Pleiades, and Hyades labeled.
Within the evenings all through December 2022, vibrant crimson Mars slides among the many stars of the horns of Taurus the Bull, heading towards the shimmering Pleiades star cluster. Mars is properly positioned for observing all evening. By the best way, Mars was closest to Earth for this 2-year interval on November 30, 2022 (December 1 in UTC). It’s 50.6 million miles (81.4 million km) away. Mars will proceed to brighten till December 8, 2022, when it should attain its once-in-2-years opposition. Additionally, the close by crimson star Aldebaran can information you to a V-shaped star cluster often called the Hyades. Chart by way of John Jardine Goss/ EarthSky.

View from above the solar system, December 2022

Circle with sun at center, planets around, and zodiac names on outer edge.
View larger. | Heliocentric view of solar system for December 2022. Discover that – in its smaller and sooner orbit across the sun – Earth catches as much as and passes Mars in December. Chart by way of Guy Ottewell.

Typically, Mars is faint

Mars was in our night sky for a lot of 2021. However, round October, the crimson planet disappeared from our sky for a time. Its superior conjunction – when it was most straight behind the sun as seen from Earth – was October 8, 2021. Some weeks afterwards – as each Earth and Mars moved of their respective orbits across the sun – Mars returned to our sky as a faint crimson dot within the east earlier than dawn. To make sure, it remained inconspicuous all through the early months of 2022.

Five images of Mars showing apparent size difference near opposition.
View larger. | The geometry of Mars’ orbit is such that it spends for much longer intervals of time at massive distances from the Earth than it does near us, which offers added incentive to look at it within the weeks round opposition. When it passes opposition, each 2 years, Mars seems massive and vibrant for only some weeks. The panel above exhibits the month-by-month change in Mars’ obvious measurement from October 13, 2022, to February 2, 2023. Mars will seem 17 arcseconds extensive on December 8, 2022. Picture by way of Dominic Ford/ In-The-Sky.org. Used with permission.

Typically, Mars is vibrant

Mars steadily brightened within the first half of 2022, first as a morning object. However later, in the course of the second half of 2022, Mars shines as a vibrant crimson ruby within the night sky. It’ll attain opposition – when Earth will fly between Mars and the sun – on December 8, 2022.

Certainly, Mars’ dramatic swings in brightness (and its crimson coloration) are why the early stargazers named Mars for his or her God of War.

Typically the conflict god rests. And generally he grows fierce! These modifications are a part of the rationale Mars is so fascinating to look at within the evening sky.

Want to follow Mars? Bookmark EarthSky’s monthly night sky guide.

Mars isn’t very large

To know why Mars varies a lot in brightness in Earth’s sky, first understand that Mars isn’t a really large world. It’s solely 4,219 miles (6,790 km) in diameter, making it solely barely greater than half Earth’s measurement (7,922 miles or 12,750 km in diameter).

Take into account Mars in distinction to Jupiter, the most important planet in our solar system. Jupiter is 86,881 miles (140,000 km) in diameter. Greater than 20 planets the dimensions of Mars could possibly be lined up facet by facet in entrance of Jupiter. Jupiter at all times seems vibrant, as a result of it’s so large.

Not so for little Mars. Its extremes in brightness need to do with its nearness (or lack of nearness) to Earth.

Space photos of Earth and Mars side by side, on black background, with Earth much bigger.
Mars isn’t very large, so its brightness – when it is vibrant – isn’t on account of its bigness, as is true of Jupiter. Mars’ brightness, or lack of brightness, is all about how shut we’re to the crimson planet. It’s all about the place Earth and Mars are, relative to one another, of their respective orbits across the sun. Picture by way of NASA.

Future Martian oppositions

When is the following opposition of Mars? The subsequent time Mars will seem at its brightest for that two-year interval in our sky? You guessed it. In January 2025! Take a look at the chart on this page that lists all oppositions of Mars from 1995 to 2037.

Earth's and Mars' orbits with Mars in different sizes at different points around its orbit.
There’s a 15-year cycle of Mars, whereby the crimson planet is brighter and fainter at opposition. In July 2018, we have been on the peak of the 2-year cycle – and the height of the 15-year cycle – and Mars was very, very vibrant! In 2020, we have been additionally on the peak of the 2-year cycle; nevertheless, Earth and Mars have been farther aside at Mars’ opposition than they have been in 2018. Nonetheless, 2020’s opposition of Mars was glorious. So, in December 2022, Mars has a great opposition however will seem smaller and dimmer than in 2020, since we’re farther away from it. Diagram by Roy L. Bishop. Copyright Royal Astronomical Society of Canada. Used with permission. Go to the RASC estore to buy the Observer’s Handbook, a mandatory software for all skywatchers.
Starry sky with Orion, Taurus, Mars, Pleiades over rocky horizon.
View at EarthSky Community Photos. | Miguel Ventura in Fafe, Portugal, captured this picture on August 28, 2022, and stated: “Once in a while and along with its pure magnificence, the evening sky and the whims of the universe provide us moments like this. With some planning and luck within the combine (truce from the clouds) I used to be capable of {photograph} this magnificent alignment. We are able to see the Pleiades and the constellation of Taurus with the planet Mars between these two … beneath close to the horizon the imposing constellation of Orion seems, asserting the autumn sky.” Thanks, Miguel!

Seeing crimson

Mars seems as a reddish gentle within the sky and is usually referred to as the crimson planet. Mars is at present close to two apparent crimson stars within the sky, reddish-orange Aldebaran and the well-known crimson supergiant Betelgeuse. So, it’ll be enjoyable to match Mars’ coloration and depth of crimson with that of Aldebaran or Betelgeuse.

Floor temperature is what determines star colors. The most popular stars are blue; the good stars are crimson. Actually, from hottest to coolest, the colours of stars vary from blue, white, yellow, orange and crimson. And whereas the colours of stars is likely to be exhausting to detect, some stars – like Aldebaran and Betelgeuse – are noticeably colourful.

Iron oxide

Then again, Mars appears red for a distinct purpose. It’s crimson due to iron oxide within the dust that covers this desert world. Iron oxide offers rust and blood its crimson coloration. Rovers on Mars sampled the Martian dust and decided it comprises three colours: reds, browns and oranges. So these three colours are what you might even see while you gaze upon Mars.

Do you see crimson while you take a look at Mars, Aldebaran and Betelgeuse? Are they the identical coloration? Do you see some other colours of stars?

Orange ball with well-defined dark marks and white spot at the north pole.
View at EarthSky Community Photos. | Nancy Ricigliano captured Mars from Lengthy Island, New York, on October 6, 2020, when it was closest to Earth. Thanks, Nancy. See extra photos of Mars at its closest in 2020.

Backside line: Mars has brightened all through 2022 because it attracts close to its opposition on December 8. Plus, the moon will occult – cross in entrance of – Mars on December 7-8.

Photos of bright Mars in 2018, from the EarthSky community

Photos of bright Mars in 2020, from the EarthSky community



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