English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Astronomers measure cosmic distances to objects beyond our own galaxy usingstandard candles: objects of known intrinsic brightness, whose apparentbrightnesses in the sky are then taken as an indication of their distances fromthe observer. In this activity, we use street lights and a digital camera toexplore the method of standard candles as well as some of its limitations andpossible sources of error.

Street lights as standard candles: A student activity for understanding astronomical distance measurements