Category: Stargazing

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Sirius A And Its Companion White Dwarf

This post explores the star Sirius A and its companion white dwarf, Sirius B. Discovered in 1862, Sirius B is a dense remnant of a larger star. The post discusses mass transfer between the two stars and explains the formation of white dwarfs. Sirius B’s density, surface temperature, and estimated age of 150 million years are also highlighted.

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Objects appearing in February's night sky - the Beehive Cluster /Cancer the Crab, Gemini and the dog stars.

In February

February is full of observing highlights: Taurus and Sirius, Beehive swarms, doppelgänger clusters, and Jupiter ruling the night. Take a look at Moon timing, Globe at Night’s target, and the best planets and deep-sky objects for New Zealand observers.

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The January night sky is a beautiful mixture of bright stars and deep sky objects. Here we see the constellation Gemini

In January

In January we have Dogs, Cats, we look at our closest neigbours and learn how to enjoy “Gastronomy”. This time of the year, looking north we are gazing towards the edge of the galaxy. Janus was the Roman deity that gave the name to January.

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SkySafari 7 Pro

A Review of SkySafari 7 Pro

The app we use to navigate around the night sky is SkySafari 7 Pro. Developed by Simulation Curriculum Corp, this app is a great way to learn about stars, planets and deep sky objects.

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A Case of Cometosis

Every so often I get this affliction I’ve had several times in my life, and hope to have several more times in the future. It’s called “cometosis”.

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Matariki in mid-July

This video shows the position of Matariki relative to the Sun in mid-July. The video shows the night sky in the east throughout the whole night finishing with the sunrise.

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Three Siblings, Three Fates: Earth, Mars, and Venus

Life needs CHNOPS, the six essential elements Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulphur. Curiosity found them on ancient Mars, but a new study shows Earth was born without them. Only a lucky impact with Theia made our world habitable. In contrast, Venus never stood a chance. Meet the three planetary siblings and discover why only Earth became a cradle for life.

The Rocky Road to Mars

Mars’s mantle contains ancient fragments up to 4km wide from its formation—preserved like geological fossils from the planet’s violent early history.

Muon Detector

Cosmic Rays and Muons

Cosmic rays are hitting the atmosphere constantly. One of the products of the collisions is muons, and we can detect muons on the surface of the Earth to learn about the cosmic rays.