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r/SGU↗

The Skeptics' Guide to the Universe

The Skeptics' Guide to the Universe is dedicated to promoting critical thinking and science literacy through insightful content and resources including an award-winning weekly podcast. This official subreddit is Your Escape to Reality to discuss the show, science news, or the latest quackery. Check the tabs/About for more links!

15k subscribers56 posts / mo in Sep 202649 authors / mosince 2010

r/SGU has 15k members (+33% over the last 12 months). It gets about 56 posts a month from 49 people. Top topics: Podcast Episodes, Podcast Guest Discussions and Steve Zaragoza.

Free report

When to post on r/SGU

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Visitors without an account can open 3 subreddit reports a day. The best time to post on r/SGU, removal risk and the rest of the report are one step away.

Size and growth

How r/SGU has grown

r/SGU

Subscriber growth

Subscribers over time

+33%in 12 months · +2.7% in 3 months · +0.6% in 1 month
Oct 202615k
Growing15k subscribers
Data since Mar 2018Live · through Oct 2026
r/SGU

Monthly activity

Posts, comments and authors per month

+19%vs Sep 2025 · +29% last 3 months vs the 3 before
Sep 202656
BusierPeaked at 123 in Jan 2023
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/SGU

Top topics

Share of the subreddit's posts

  1. Podcast Episodes0.6%
  2. Podcast Guest Discussions0.3%
  3. Steve Zaragoza0.3%
  4. Podcast Episodes0.2%
  5. Stargate Universe Discussions0.2%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Bluesky Social
  2. Science-Based Medicine
  3. Apple
  4. The Skeptics' Guide to the Universe
  5. NPR

The full report

Everything else about r/SGU

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