Islam is a general name of the religion which applies to the entire beings in the Universe.
surrender. Islam is the path of being obedient to Allah. Any creature (alive or non-living) that is obedient to Allah is on the path of
In fact, every being in the entire Universe, besides most of the humans, are obedient to Allah.
أَلَمْ تَرَ أَنَّ اللَّهَ يَسْجُدُ لَهُ مَن فِي السَّمَاوَاتِ وَمَن فِي الْأَرْضِ وَالشَّمْسُ وَالْقَمَرُ وَالنُّجُومُ وَالْجِبَالُ وَالشَّجَرُ وَالدَّوَابُّ وَكَثِيرٌ مِّنَ النَّاسِ وَكَثِيرٌ حَقَّ عَلَيْهِ الْعَذَابُ وَمَن يُهِنِ اللَّهُ فَمَا لَهُ مِن مُّكْرِمٍ إِنَّ اللَّهَ يَفْعَلُ مَا يَشَاء
Do you not see that to Allah prostrates whoever is in the heavens and whoever is on the earth and the sun, the moon, the stars, the mountains, the trees, the moving creatures and many of the people? But upon many the punishment has been justified. And he whom Allah humiliates - for him there is no bestower of honor. Indeed, Allah does what He wills.
Hajj 18 (22/18)
Every being in the the skies and on Earth are
surrendered to Allah.
Shariat is for a specific target. It is updated with every delivery of nabi (prophet). Shariat changes according to era and conditions.
I will give an example (don't take its directly with asking for proof, this is just an example). Assume that humanity escapes from the Earth and allocates in a different planet in a different solar system which is revolving around its sun once in a hour. Then, when a nabi comes, in the shariat given to him, the number of salats in a day likely to be reduced; like one salat each three days. This is what shariat is.
For example, cats have a different shariat, their ibadats are catching birds in the park. Threes have different shariat, their ibadats are growing up and converting carbondioxide to oxygen. What we simply call
shariat is actually
shariat for humans in long.
Shariat is not universal, we cannot claim that it is the same in the entire universe. It is updated as soon as a new nabi arrives. But Islam is universal, more general. It is the path or
surrendering to Allah. It is the same in the entire universe.
If there is an intelligent alien race somewhere in the Universe, they will receive their own nabi among them. Without receiving a nabi and warned by him, they won't be responsible for anything.
مَّنِ اهْتَدَى فَإِنَّمَا يَهْتَدي لِنَفْسِهِ وَمَن ضَلَّ فَإِنَّمَا يَضِلُّ عَلَيْهَا وَلاَ تَزِرُ وَازِرَةٌ وِزْرَ أُخْرَى وَمَا كُنَّا مُعَذِّبِينَ حَتَّى نَبْعَثَ رَسُولاً
Whoever is guided is only guided for [the benefit of] his soul. And whoever errs only errs against it. And no bearer of burdens will bear the burden of another. And never would We punish until We sent a messenger.
Isra 15 (17/15)
For example, another fantastic example, assume that an alien group visits the Earth when Moses was alive. They meet with Moses. Can Moses be a nabi for them? No. The aliens' nabi must be from themselves. As a nabi for human must be human, a nabi for aliens must an alien.
هُوَ الَّذِي بَعَثَ فِي الْأُمِّيِّينَ رَسُولًا مِّنْهُمْ يَتْلُو عَلَيْهِمْ آيَاتِهِ وَيُزَكِّيهِمْ وَيُعَلِّمُهُمُ الْكِتَابَ وَالْحِكْمَةَ وَإِن كَانُوا مِن قَبْلُ لَفِي ضَلَالٍ مُّبِينٍ
It is He who has sent among the unlettered a Messenger from themselves reciting to them His verses and purifying them and teaching them the Book and wisdom - although they were before in clear error.
Jumu'a 2 (62/2)