Why does the noun Mars have the article der?
This noun follows no general suffix rule — its gender is part of the core vocabulary you simply learn alongside the word.
Declension table for German noun Mars
How it changes across the four cases.
| Case | Definite | Indefinite | Negative |
|---|---|---|---|
| Nominativ | der Mars | ein Mars | kein Mars |
| Akkusativ | den Mars | einen Mars | keinen Mars |
| Dativ | dem Mars | einem Mars | keinem Mars |
| Genitiv | des Marses | eines Marses | keines Marses |
| Nominativ | die Marsse | Marsse | keine Marsse |
| Akkusativ | die Marsse | Marsse | keine Marsse |
| Dativ | den Marssen | Marssen | keinen Marssen |
| Genitiv | der Marsse | Marsse | keiner Marsse |
Examples in context
Real sentences using Mars in different cases.
| Case | Definite | Indefinite | Negative |
|---|---|---|---|
| Nominativ | Der rote Mars ist heute sichtbar.The red Mars is visible today. | Ein roter Mars erscheint am Himmel.A red Mars appears in the sky. | Kein roter Mars leuchtet dort.No red Mars shines there. |
| Akkusativ | Wir beobachten den roten Mars genau.We observe the red Mars closely. | Wir sehen einen roten Mars dort.We see a red Mars there. | Wir finden keinen roten Mars hier.We find no red Mars here. |
| Dativ | Wir fliegen zu dem roten Mars bald.We fly to the red Mars soon. | Wir denken an einem roten Mars.We think of a red Mars. | Wir träumen von keinem roten Mars.We dream of no red Mars. |
| Genitiv | Die Farbe des roten Marses ist schön.The color of the red Mars is beautiful. | Die Größe eines roten Marses ist enorm.The size of a red Mars is enormous. | Die Oberfläche keines roten Marses ist bekannt.The surface of no red Mars is known. |
| Nominativ | Die roten Marsse sind oft sichtbar.The red Marses are often visible. | Rote Marsse erscheinen am Himmel.Red Marses appear in the sky. | Keine roten Marsse leuchten dort.No red Marses shine there. |
| Akkusativ | Wir beobachten die roten Marsse genau.We observe the red Marses closely. | Wir sehen rote Marsse dort.We see red Marses there. | Wir finden keine roten Marsse hier.We find no red Marses here. |
| Dativ | Wir fliegen zu den roten Marssen bald.We fly to the red Marses soon. | Wir denken an roten Marssen.We think of red Marses. | Wir träumen von keinen roten Marssen.We dream of no red Marses. |
| Genitiv | Die Farbe der roten Marsse ist schön.The color of the red Marses is beautiful. | Die Größe roter Marsse ist enorm.The size of red Marses is enormous. | Die Oberfläche keiner roten Marsse ist bekannt.The surface of no red Marses is known. |
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Frequently asked questions
Everything you might wonder about der, die, das — and the Der Artikel app.
Is it der, die, or das Mars?
It is der Mars. In German, every noun has a grammatical gender, and Mars is masculine. You should always learn the article together with the noun to ensure your German grammar is correct.
What is the plural of der Mars?
The noun Mars is typically used in the singular form (Singularetantum) or has a plural form identical to the singular.
What does der Mars mean in English?
The German word der Mars translates to “Mars” in English.
How do you decline der Mars?
Like all German nouns, Mars changes its article depending on the case. In the singular, the forms are:
- Nominativ: der Mars
- Akkusativ: den Mars
- Dativ: dem Mars
- Genitiv: des Marses
These changes are necessary because German uses cases to indicate the noun’s role in a sentence (such as the subject or object). Knowing these forms allows you to build grammatically correct sentences.
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