• News
  • Q & A
  • Videos
  • Illustrations
  • Competitions
  • Topics
    • Astronomy
    • Deep Space
    • Heroes of Space
    • FutureTech
    • Solar System
    • Space Exploration
  • About
  • Advertise
  • Jump To…
    • News
    • Q & A
    • Videos
    • Illustrations
    • About Us
    • Subscribe
  • All About Space
  • Back issues
  • Subscribe
  • Bookazines
  • Digital Editions
    • All About Space Digital Editions
    • GreatDigitalMags.com
  • Subscription Offers
Astronomy

What do the letters of stellar classification stand for?

O, B, A, F and so on… What do they all mean?

Solar System

How big can sunspots get?

We take a look at how big these cooler regions of our star can get

Load more posts...

All About Space is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

  • About Us
  • Terms and conditions
  • Privacy policy
  • Cookies policy
  • Advertise with us

© Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA . All rights reserved. England and Wales company registration number 2008885.