NASA's Mariner 10 spacecraft captured image data of Venus in 1974. The data was re-processed earlier this year with modern image processing software. (NASA/JPL-Caltech)
Rare possible marker of life discovered on Venus

Astronomers have found evidence of phosphine gas in the cloud decks of Venus, which may be associated with the presence of life.

The blue areas in this composite image show water concentrated at the Moon's poles. Homing in on the spectra of rocks there, researcher found signs of hematite, a form of rust. (ISRO/NASA/JPL-Caltech/Brown University/USGS)
Sky News This Week: September 16, 2020

In the news recently, the Canadian Space Agency named a new president, three stars mess up a planetary disc, and a new search for E.T. finds nothing so far.

Kevin Watson used a "Hubble" bi-colour palette (R=50/50, G=Ha, B=OIII) to produce this image of the Helix Nebula with the RASC Robotic Telescope data. (Kevin Watson/RASC Robotic Telescope)
RASC Robotic Telescope Contest: September 2020

Want to put your image editing skills to the test? Do so this September in the RASC Robotic Telescope image editing contest.


This Week’s Sky: September 14 to 20, 2020

See zodiacal light this week, visible in the dark new Moon sky. Later this week, look for Mercury near the crescent Moon.

Fraught frontier

Satellite constellations are crowding the skies, causing conflict between astronomers, governments and businesses.

Michael Watson, Comet NEOWISE
Education and evolution

Managing editor Allendria Brunjes talks about the changing world, and how the astronomy community can learn to adapt.

The Latest

Zodiacal light over La Silla
How do I see the zodiacal light?

How to see the zodiacal light, the leftovers of our cosmic neighbourhood’s formation some 4.5 billion years ago.

The best of Messier 82

The winner of the August 2020 RASC Robotic Telescope image editing contest is Ian Barredo, producing a clear and beautifully coloured composition of Messier 82.

This Week’s Sky: September 7 to 13, 2020

In This Week’s Sky, Mars starts a retrograde loop while Jupiter completes one. Neptune reaches opposition near Phi Aquarii, and a waning crescent Moon meets Venus.

September 2020: Planets at a glance

Get ready for September’s night sky with this guide to the planets in our Solar System.

This Week’s Sky: August 31 to September 6, 2020

This week, the Moon meets with Mars. The Red Planet will also experience a solstice and the start of its northern winter.

Sharpless 2-112 by Ron Brecher

Ronald Brecher has won Photo of the Week for August 14, 2020 with his image Sharpless 2-112.

Explore the current issue

vol 27 July/August 2020
  • 01. Fraught frontier
  • 02. The loneliest scientists
  • 03. Beginner binoculars
  • 04. Rendezvous with Bennu
  • 05. Tech tuned to the cosmos
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Getting ready for the Perseid Meteor Shower

Here are some observation and photographing tips for the Perseids, which peak August 12-13, 2020.

Comet NEOWISE dims to binocular object

Comet NEOWISE is headed on its way out of our Solar System, fading from our skies.

Comet NEOWISE climbs higher in evening sky

Comet NEOWISE’s trajectory will bring it closest to the Earth July 22.

Comet NEOWISE takes evening shift

The long-awaited bright comet C/2020 F3 NEOWISE will become visible after sunset this week, adding to its breathtaking morning shows.

About the Royal Astronomical Society of Canada

The Royal Astronomical Society of Canada (RASC) began as the Toronto Astronomical Club on December 1, 1868. The eight men who gathered to share their interests were not professional astronomers, just working-class citizens with a passion for astronomy.


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Astronomy tools recommended by our experts.


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