20 July 2025
Astronomy Now
  • Home
  • The Magazine
    • About
    • Current Issue
    • Subscribe
    • Renew Subscription
      • September last issue
      • August last issue
      • July last issue
  • AstroFest 2026
  • News
  • Observing
    • UK Sky Chart
    • Almanac
    • Scope Calc
    • DSLR Calc
  • Reviews
    • Equipment
    • Book Reviews
  • Spaceflight Now
  • Shop
  • Contact Us
    • Subscriptions
    • Your Views
    • Ask Astronomy Now
    • Editorial
    • Advertising
Latest News
  • [ 18 July 2025 ] Astronomy Now under new ownership News
  • [ 9 June 2025 ] Is the Hubble Tension Resolved? News
  • [ 16 May 2025 ] Universe’s end – sooner rather than later News
  • [ 26 March 2025 ] A faint star will reveal itself as it throws a hissy-fit News
  • [ 24 March 2025 ] Saturn’s Rings to “Disappear” News
  • Twitter
  • Facebook

biosignatures

News

Hubble tests techniques for finding biosignatures in exoplanet atmospheres

7 August 2020 Astronomy Now

Hubble uses sunlight reflected from the moon during an eclipse to detect ozone in Earth’s atmosphere, testing methods needed to assess exoplanet atmospheres.

News

Earth’s chemical fingerprint could help identify habitable exoplanets

29 August 2019 Astronomy Now

Canadian astronomers have determined Earth’s spectral “fingerprint,” the characteristics that would indicate whether an exoplanet might have a viable biosphere.

News

Nonphotosynthetic pigments could be biosignatures of life on other worlds

23 June 2015 Astronomy Now

Researchers have found that if organisms with nonphotosynthetic pigments — those that process light for tasks other than energy production — cover enough of a distant exoplanet’s surface, their spectral signal could be strong enough to be detected by powerful future telescopes now being designed.

Astronomy Now NewsAlert

Get the latest astronomical news and stargazing tips delivered to your inbox.

News Headlines

  • Stuart Clark and Steven Young shake hands after signing the Astronomy Now contract.
    Astronomy Now under new ownership
    18 July 2025
  • universe
    Is the Hubble Tension Resolved?
    9 June 2025
  • The Universe
    Universe’s end – sooner rather than later
    16 May 2025
  • T Coronae Borealis
    A faint star will reveal itself as it throws a hissy-fit
    26 March 2025
  • Saturn
    Saturn’s Rings to “Disappear”
    24 March 2025
  • Home
  • The Magazine
    • About
    • Current Issue
    • Subscribe
    • Renew Subscription
      • September last issue
      • August last issue
      • July last issue
  • AstroFest 2026
  • News
  • Observing
    • UK Sky Chart
    • Almanac
    • Scope Calc
    • DSLR Calc
  • Reviews
    • Equipment
    • Book Reviews
  • Spaceflight Now
  • Shop
  • Contact Us
    • Subscriptions
    • Your Views
    • Ask Astronomy Now
    • Editorial
    • Advertising

© 2019 Pole Star Publications Limited

Astronomy Now