Adding on to some of the brilliant comments here, Let's take a look at what's taking place in Ascension circles around the planet.
Take what you know about isra wa al-miraj and apply it to what you know of the 7 chakras which are directly connected to states of consciousness. And so the 7 heavens. Each heaven is higher than the other. And the 7th which is highest the crown chakra relates to your own divinity and is connected to jannatul Firdaus.
The Prophet SAW said that there will be those who will be put on a bridge between dunya and jannah, so that they could purify their hearts before entering jannah. That's exactly where we are. We are in that state of limbo where we have to purify our hearts before we enter the 5th dimension which constitutes the beginning of the higher realms.
If you've heard of Twin flames, you know of the verses that say "We created you in pairs". Surah 51:59 and Surah 78:9. We were literally created in pairs. The masculine soul and the feminine soul before we incarnated into the planet.
You've heard people saying that our bodies are changing from carbon based to crystalline based DNA and physical form. Remember when the Prophet SAW was telling of the way the people injannahwill have such clear skin that they will see water flowing into people's guts. And we will not pass out waste from our bodies, nor will women have their monthly flows, because the crystalline based body is already purified and will not need more purification.
When you read Suratul Zilzalah, what of it do you see happening right now? All the way from the turn of the millenium, global warming, hurricanes, typhoons, earthquakes, volcanic eruptions,... Literally, mother earth is spewing out all the negative energy humanity has been feeding her for ages. And check out how many angels are flocking to earth. Some of us can't see them but some can. And there's a reason for their coming.
So although some people don't want to agree, yes, in Islam we also have tons of messages and information about the Ascension. It's happening in our lifetime.
From what i know the 7 heavens are veils....as you progress through spirituality and knowledge you gain access to these veils...