Muslims are only aware of angels, jinn, humans, and animals as creation by God. Therefore, there are no extraterrestrial life. However, jinn and angels are capable of flying in the outer space. In chapter Al-Mulk, God speaks of how he uses comets to shoot away jinns. It is also mentioned in Chapter "AS-SAAFFAT". my understanding of this could be a little off. also angels travel between earth and heavens to carry out God's orders.

1) "Within Islam, the statement of the Qur'an "All praise belongs to God, Lord of all the worlds" indicates multiple universal bodies and maybe even multiple universes that may indicate extraterrestrial and even extradimensional life. Surat Al-Jinn also mentioned a statement from a Jinn regarding the current status and ability of his group in the heavens. In the Qadiani faith, a more direct reference from the Quran is presented by Mirza Tahir Ahmad as a proof that life on other planets may exist according to Quran. In his book, Revelation, Rationality, Knowledge & Truth, he quotes verse 42:29 "And among His Signs is the creation of the heavens and the earth, and of whatever living creatures (da'bbah) He has spread forth in both..."; according to this verse there is life in heavens. According to the same verse "And He has the power to gather them together (jam-'i-him) when He will so please"; indicates the bringing together the life on Earth and the life elsewhere in the universe. The verse does not specify the time or the place of this meeting but rather states that this event will most certainly come to pass whenever God so desires. It should be pointed out that the Arabic term Jam-i-him used to express the gathering event can imply either a physical encounter or a contact through communication." Source and further information: http://en.wikipedia.org/wiki/Extraterrestrial_life 2) Here the particular views of an heretic sect: "The Nation of Islam (NOI) (Arabic: أمة الإسلام‎, Ummah al-Islāmu) is a religious/political organization founded in Detroit, Michigan, by a man called Wallace Fard Muhammad in July 1930 with the self-proclaimed goal of resurrecting the spiritual, mental, social, and economic condition of the black men and women of America. NOI also promotes the belief that God will bring about a universal government of peace. From 1978 to the present, Louis Farrakhan has been the leader of a reconstituted Nation of Islam, the original organization having been renamed and dissolved by Warith Deen Muhammad. " "The main belief of The Nation of Islam and its followers is that there is no God but Allah. However, they redefine "Allah" by saying "who came in the person of W. D. Fard." Fard founded the Nation of Islam and subsequently installed Elijah Muhammad as the organization's leader. Their teachings are heretical by traditional Islamic standards which abhor the deification of any person, or the anthropomorphization of God." Source and further information: http://en.wikipedia.org/wiki/Nation_of_Islam "The Nation of Islam subscribes to the belief that UFOs are responsible for "raising mountains" and will destroy the world on the Day of Judgment. Its former leader, Elijah Muhammed, claimed that the Biblical Book of Ezekiel describes a "Motherplane" or "Wheel". " Source and further information: http://en.wikipedia.org/wiki/UFO_religion#Nation_of_Islam

Muslims must belive in Angels and Jinn. In the Quran in surah Al-Fatihah Allah says that He is the Lord of the WORLDS. This may hint that there are more worlds than one since He uses a plural form, which could mean there are other creations besides us, the angels, jinn, and animals.