What is #cosmology used for?

#cosmology is a popular hashtag used on Instagram, TikTok, YouTube, and LinkedIn to categorize content. It has 15 related hashtags. The best hashtags to pair with #cosmology are: #astrophysics, #hubblehangout, #spacegram, #astronomy, #cosmos.

How many hashtags should I use with #cosmology?

For Instagram, use 20-30 hashtags including #cosmology. For TikTok, use 3-5 hashtags. For YouTube, use 3-5 in description. For LinkedIn, keep it to 3-5 professional hashtags. Studies show this can increase engagement by +48%.

How do I use #cosmology on Instagram?

On Instagram, add #cosmology in your caption or first comment with 20-30 related hashtags. Best tags to combine: #astrophysics, #hubblehangout, #spacegram. Use in Stories and Reels for extra discovery.

Does #cosmology work on TikTok?

Yes! Use #cosmology with 3-4 related hashtags like #astrophysics and #hubblehangout. Posts using #cosmology see 2x more reach on average. TikTok prioritizes content quality, so pair with trending sounds.

Can I use #cosmology on YouTube?

Yes, add #cosmology to your video title — first 3 hashtags appear above the title. Include related tags like #astrophysics, #hubblehangout in your description. Works great for YouTube Shorts.

Is #cosmology still popular in 2026?

Yes! #cosmology remains highly popular in 2026 with 15 related hashtags and 113+ posts analyzed. 73% of top-performing posts in this niche use #cosmology or related tags.

What hashtags are similar to #cosmology?

Similar hashtags to #cosmology include: #astrophysics, #hubblehangout, #spacegram, #astronomy, #cosmos, #hst, #physics, #science. These share 13% average relevance and can increase reach by 2x when used together.