How to get astr?

As a cryptocurrency enthusiast and finance professional, I'm curious about the methods to acquire Astr, a seemingly promising digital asset. Could you elaborate on the steps involved in procuring Astr? I'm particularly interested in understanding whether it's available on mainstream exchanges, if there are any specific requirements or qualifications to purchase, and if there are any alternative methods or platforms to acquire it. Furthermore, I'd like to know if there are any risks or considerations to be mindful of when acquiring Astr. Thank you for your assistance in clarifying this process.