TextRanch

The best way to perfect your writing.

Discover why 1,062,726 users count on TextRanch to get their English corrected!

1. Input your text below.
2. Get it corrected in a few minutes by our editors.
3. Improve your English!

One of our experts will correct your English.

Mars' vs Mars's

Both 'Mars' and 'Mars's' are correct, but they are used in different contexts. 'Mars'' is the possessive form of the singular noun 'Mars', while 'Mars's' is the possessive form of the singular noun 'Mars' when indicating possession by a singular entity. The choice between the two depends on the style guide you are following or personal preference.

Last updated: April 01, 2024 • 2586 views

Mars'

This is correct when indicating possession by a plural entity or when following a style guide that prefers this form.

Use 'Mars'' when indicating possession by a plural entity or following a style guide that prefers this form.

Examples:

The spacecraft landed on Mars' surface.
The scientists studied Mars' atmosphere.
The rovers explored Mars' terrain.

Show examples from the web [+]

War in Syria: 'Domenico free: it's like coming back from Mars'
At the same time there was enough weight to make the menace of 'Mars' march toward you in time whilst the details of the bows bouncing on steel wire cut through.
The big punchy sound was equally good when it came to bringing out the menace of 'Mars' or the impact of Nirvana.
It went into Mars' orbit last week.
Mars' polar ice is mostly CO-2.
I'm Mars' sole survivor.
I pulled it off Mars' computer.
Some of Mars' secrets are best left undiscovered.
Eddie Mars' head looks like a crushed watermelon.
First, we replicate Mars' atmosphere.
The loss of Mars' atmosphere meant that liquid water could no longer exist on its surface.
Pilgrim wasn't just seeing things in Mars' soil.
She's Keith Mars' daughter.
Mars' only crime is foolishness and fraud.
Mars' magnetic field Died sometime around 4.1 billion years ago.
You're Keith Mars' little girl.
That's where Eddie Mars' wife is holed up.
The impact carved out the borealis basin, which covers over 40% of Mars' surface.
Mars' atmosphere is so thin... you don't need a lot of streamlining.
The Hermes, well... it can't enter Mars' orbit. Otherwise, they'll never have enough fuel to make it home.

Alternatives:

Mars's
The spacecraft landed on the surface of Mars.
The scientists studied the atmosphere of Mars.
The rovers explored the terrain of Mars.

Mars's

This is correct when indicating possession by a singular entity.

Use 'Mars's' when indicating possession by a singular entity.

Examples:

The mission is exploring Mars's geology.
NASA's rover is studying Mars's climate.
Mars's orbit around the sun is elliptical.

Show examples from the web [+]

When, again by means of observational data, he finally realized that the only reasonable explanation of Mars's motion was to admit that its orbit was not circular, he did not hesitate to forsake the most sacred axiom of traditional astronomy.
Mars's Eye red dot finder (you can also use a Daisy red dot finder from Walmart or Academy, especially with some modifications)
Mars's sidereal Motion = 0.524032722 Degree/Days
Nevertheless, the exhausting computations and innumerable unsuccessful attempts which led Kepler to the solution of Mars's motion, testify to the great importance he attached to observation.
Well, geography was never my strong suit, but aren't we underneath Mars's north pole?
Our approach is not naive; it is not, as has been said, Venus's softness against Mars's strength.
At a first glance, it is possible to describe Mars's orbit with a model "deferent, 1st epicycle, 2nd epicycle,"where:
But before we even entered Mars's atmosphere it was like she was trying to push us away.

Alternatives:

Mars'
The mission is exploring the geology of Mars.
NASA's rover is studying the climate of Mars.
The orbit of Mars around the sun is elliptical.

Related Comparisons

What Our Customers Are Saying

Our customers love us! We have an average rating of 4.79 stars based on 283,125 votes.
Also check out our 2,100+ reviews on TrustPilot (4.9).

"Thank you!"
Sachi Nakama July 2024
"I have literally been through chat, PI, claude, bard and bing and I got conflicting answers! Thank you! Human intelligence reigns!"
Retha July 2024
"Faster than AI"
CYNTHIA December 2023
"This was very helpful and I personally think this site is the best."
Kaden October 2023
"It was extremely thorough and very helpful!"
imperialelisa October 2023
"7 years without any disappointment. Always 100% satisfied. You guys are the best in the world at what you do. Thank you so much :)"
Zubair Alam October 2023
"In a world of text messages and online communication, this is great to have as a live tool. Thank you."
Selena October 2023
"Without textranch I would be stuck!"
宏祐 October 2023
"Accuracy and fast response. Personal comments from editor. Thank you."
Clh September 2023
"I wasn't aware of this service, it's fascinating and more reliable than standard IA tools available on the internet"
Arturo September 2023
"The fact that you can get reliable fast feedback on your texts."
Vinicius Antonio August 2023
"you guys are better than grammarly i'm being honest here"
ordinary July 2023
"OMG! This is really good than any other text correction tools I've used so far. Highly recommend this."
Vehan July 2023
"Very fast and accurate. thank you."
mojtaba July 2023
"I love this app because it's help to writing skills all of students ♥️"
Tarisini July 2023
"This was exactly the mistake I was looking for, the wording dind´t sound right at first. Better than grammarly!"
Ente July 2023
"The immediate help that I received was reassuring and very satisfactory. Thanks."
priiiyanshuu July 2023
"this helps A LOT for my studies."
kathnunez02 June 2023
"Woow!! I would never have expected such precision! Thank you soooo much!!"
Berta June 2023
"Real Time Editor and not AI. Many Thanks."
Priya June 2023
"The very first thing excites me about Textranch is how much your editors care."
sepideh June 2023
"The fact that texts are checked by human editors rather than by AI, etc. I appreciate this!"
Анна June 2023
"Feel welcome, immediate response, high quality feedback"
martin.roy June 2023
"This is the best app that I have ever seen"
Burulai May 2023

Why choose TextRanch?

Lowest prices
Up to 50% lower than other online editing sites.

Fastest Times
Our team of editors is working for you 24/7.

Qualified Editors
Native English experts for UK or US English.

Top Customer Service
We are here to help. Satisfaction guaranteed!