EnglishMike Massimino is on Twitter (X) as @Astro_Mike, with 1,040,093 followers and 6,330 posts. A typical post draws 107 interactions, an engagement rate of 0.01% per follower. It has been on X since April 2009, an account age of 17 years.
Engagement
A typical post picks up 107 interactions against 1.0M followers, an engagement rate of 0.01%. Measured over 8 original posts, its engagement rate beats 34% of 20,182 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 7.0K times each, and 1.53% of those impressions turn into an interaction. That is about 0.671% of the follower count, which is the gap between an audience on paper and an audience in a timeline.
Measured over 8 original posts from a 30-day window, last computed on October 24, 2026.
Full engagement reportFollower growth
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Bio
Former @NASA Astronaut, NY Times Best Selling Author of #Spaceman, Professor at @Columbia, Sr. Advisor @IntrepidMuseum
Notable followers
The biggest accounts in our directory following @Astro_Mike.
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Mike Massimino on Twitter (X) - frequently asked questions
- What is the Twitter handle for Mike Massimino?
- Mike Massimino posts on Twitter (X) as @Astro_Mike. The profile is at x.com/Astro_Mike, and the View on X button at the top of this page opens it.
- How many followers does Mike Massimino have on Twitter?
- Mike Massimino (@Astro_Mike) has 1,040,093 followers on Twitter (X). The count is refreshed continuously from public data.
- When did Mike Massimino join Twitter?
- Mike Massimino joined Twitter (X) in April 2009. The @Astro_Mike account is 17 years old. Searches for Mike Massimino age often mean a personal age, which we do not publish. The figure here is the account age only.