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r/AskScienceDiscussion↗

Discuss, learn, teach. Follow the tangents.

Here you can ask any question you have about being a scientist, what's new in a field, what's going to happen in a field, or are curious about how we got to this point.

194k subscribers199 posts / mo in Sep 2026181 authors / mosince 2012

r/AskScienceDiscussion has 194k members (+16% over the last 12 months). It gets about 199 posts a month from 181 people. Top topics: ScientificJournalsAndResearch, Mars Colonization & Terraforming and Big Bang Theory.

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When to post on r/AskScienceDiscussion

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Size and growth

How r/AskScienceDiscussion has grown

r/AskScienceDiscussion

Subscriber growth

Subscribers over time

+16%in 12 months · +3.1% in 3 months · +0.7% in 1 month
Oct 2026194k
Growing194k subscribers
Data since Mar 2018Live · through Oct 2026
r/AskScienceDiscussion

Monthly activity

Posts, comments and authors per month

−11%vs Sep 2025 · −11% last 3 months vs the 3 before
Sep 2026199
QuieterPeaked at 591 in Dec 2021
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/AskScienceDiscussion

Top topics

Share of the subreddit's posts

  1. ScientificJournalsAndResearch0.3%
  2. Mars Colonization & Terraforming0.3%
  3. Big Bang Theory0.3%
  4. Research Reading Strategies0.2%
  5. Physics Books0.2%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Doi
  2. ScienceDirect
  3. Nature
  4. xkcd
  5. NASA

The full report

Everything else about r/AskScienceDiscussion

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research