EnglishMike Massimino is on Twitter (X) as @Astro_Mike, with 1,039,954 followers and 6,330 posts. It has been on X since April 2009, an account age of 17 years.
Engagement
Early reading. We have captured 7 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 115 interactions against 1.0M followers, an engagement rate of 0.011%. Posts are seen about 6.0K times each, and 1.92% of those impressions turn into an interaction. That is about 0.577% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.27 posts a day over the last 30 days, though only 23% of days saw any activity at all.
Measured over 7 original posts from a 30-day window, last computed on October 30, 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 1,039,954 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 Searches for Mike Massimino age often mean a personal age, which we do not publish.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.