All posts by Justin Avery

Justin spends most of his time creating notebooks about space, and far too little time maintaining this site.

Planets of the Morning

This is a wonderful image and is a highlight for anyone that is able to rise as the sun nears the horizon int he morning. While Jupiter is by far the largest planet in the Solar System it is surprising...

/ November 27, 2015

Aurora over Clouds

Auroras usually occur high above the clouds. The auroral glow is created when fast-moving particles ejected from the Sun impact the Earth’s magnetosphere, from which charged particles spiral along the Earth’s magnetic field to strike atoms and molecules high in...

/ November 25, 2015

A 212 Hour Exposure of Orion

The constellation of Orion is much more than three stars in a row. It is a direction in space that is rich with impressive nebulas. To better appreciate this well-known swath of sky, an extremely long exposure was taken over...

/ November 24, 2015

Phobos: Doomed Moon of Mars

This moon is doomed. Mars, the red planet named for the Roman god of war, has two tiny moons, Phobos and Deimos, whose names are derived from the Greek for Fear and Panic. These martian moons may well be captured...

/ November 23, 2015

Recycling NGC 5291

Following an ancient galaxy-galaxy collision 200 million light-years from Earth, debris from a gas-rich galaxy, NGC 5291, was flung far into intergalactic space. NGC 5291 and the likely interloper, also known as the “Seashell” galaxy, are captured near the center...

/ November 22, 2015
Park Meteors Leonids

Leonids and Friends

Leonid meteors rained down on planet Earth this week, the annual shower of dusty debris from the orbit of Comet 55P/Tempel-Tuttle. Leonids streak through this composite night skyview from a backyard observatory in southern Ontario. Recorded with camera fixed to...

/ November 21, 2015
Centaurus HST-ESO-LL

Centaurus A

What’s the closest active galaxy to planet Earth? That would be Centaurus A, only 11 million light-years distant.┬áSpanning over 60,000 light-years, the peculiar elliptical galaxy is also known as NGC 5128. Forged in a collision of two otherwise normal galaxies,...

/ November 20, 2015
The Pelican Nebula

The Pelican Nebula in Gas Dust and Stars

This is an image of the Pelican Nebula. For those of you that are not aware the Nebular is a collection of dust and particles that have been cast away from former stars that have since died out. This dust...

/ November 19, 2015

A Sudden Jet on Comet 67P

There she blows! A dramatic demonstration of how short-lived some comet jets can be was documented in late July by the robotic Rosetta spacecraft orbiting the nucleus of Comet 67P/Churyumov-Gerasimenko. The featured animation depicts changes in the rotating comet with...

/ November 19, 2015
Orion Fireball Scheggia 1080

A Blazing Fireball between the Orion Nebula and Rigel

What’s happening to that meteor? A few days ago, a bright fireball was photographed from the Alps mountain range in Switzerland as it blazed across the sky. The fireball, likely from the Taurids meteor shower, was notable not only for...

/ November 17, 2015