17 April 2021
Astronomy Now
  • Home
  • The Magazine
    • About
    • Current Issue
    • Subscribe
    • Renew Subscription
      • March last issue
      • April last issue
      • May last issue
  • AstroFest
  • 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
  • [ 11 April 2021 ] NASA delays Mars helicopter flight to troubleshoot test glitch News
  • [ 7 April 2021 ] Astronomers spot merging galaxies hosting dual quasars News
  • [ 1 April 2021 ] RAS warns of growing light pollution as satellite fleets expand News
  • [ 1 April 2021 ] InSight lander detects two more sizeable marsquakes News
  • [ 31 March 2021 ] Interstellar comet 2I/Borisov may be most pristine ever seen News
  • Twitter
  • Facebook

Tony Darnell

News

Hubble views of Ganymede’s aurorae suggest a vast salty subsurface ocean

13 March 2015 Astronomy Now

Jupiter’s moon Ganymede is the largest moon in our Solar System and the only moon with its own magnetic field. NASA’s Hubble Space Telescope has the best evidence yet for a 60-mile deep underground saline ocean on Ganymede, believed to contain more water than all the water on Earth’s surface.

News

Hubble sees pulverised planet in Beta Pictoris debris disc?

23 February 2015 Astronomy Now

Astronomers have used NASA’s Hubble Space Telescope to take the most detailed picture to date of a large, edge-on, gas-and-dust disc encircling the 20-million-year-old star Beta Pictoris, revealing what may be the pulverisation of a Mars-size body in a giant collision.

Astronomy Now NewsAlert

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

News Headlines

  • NASA delays Mars helicopter flight to troubleshoot test glitch

    11 April 2021
  • Astronomers spot merging galaxies hosting dual quasars

    7 April 2021
  • RAS warns of growing light pollution as satellite fleets expand

    1 April 2021
  • InSight lander detects two more sizeable marsquakes

    1 April 2021
  • Interstellar comet 2I/Borisov may be most pristine ever seen

    31 March 2021
  • Home
  • The Magazine
    • About
    • Current Issue
    • Subscribe
    • Renew Subscription
      • March last issue
      • April last issue
      • May last issue
  • AstroFest
  • 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

Do NOT follow this link or you will be banned from the site!