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Saturday November 25th 2017

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Telescopes & more

Positions of Planets

The tables offer monthly positions of the four brightest planets: Venus, Mars, Jupiter and Saturn. Note, that a constellation may not be visible during the night.  Another [Read More]

Observing Tips for Beginners

  Amateur astronomers have to face some challenges with equipment, weather and environment during their stargazing sessions. The tips listed below help to overcome some [Read More]

German Equatorial Mount – Part 2

The first part of this article gave an introduction of German Equatorial Mounts (GEMs) and discussed polar aligment and how it is been done.  This second part of the [Read More]


  • Week in Images
    Our week through the lens: 20-24 November 2017
  • Earth from Space
    In the 249th edition, the Sentinel-1 mission takes us over part of Thurston Island in Antarctica
  • ESA’s latest technology CubeSat cleared for launch site
    GomX-4B, ESA’s latest and largest technology-testing CubeSat, will be launched from China early next year, together with the near-identical GomX-4A. The pair will test intersatellite communication links and propulsion while orbiting up to 4500 km apart.


Top 10 Night Sky Objects for Astronomy Beginners

Your first telescope has just arrived and now you can’t wait to try it out. Trust me, I remember this feeling very well. The universe is calling and it want to be [Read More]

Planets & more

Positions of Planets

The tables offer monthly positions of the four brightest planets: Venus, Mars, Jupiter [Read More]

Mars Express – Scientific Highlights

The following DLR article talks about measurements and scientific experiments performed [Read More]

Mars Northern Polar Region

Mars does not loose any of its attraction, particularly not in view of future manned Mars [Read More]


Astrophoto Gallery

This gallery shows astro-photos made by amateur astronomers.  Clicking the images enlarges them to original size and provides information about the object and how [Read More]

Solar System

The Moons of the Solar System

More Questions Than Answers Think of our solar system, and for most of us the first thing [Read More]

Asteroid Mining

Near Earth Asteroid Itokawa. A likely candidate for future mining opportunities. Credit [Read More]

Positions of Planets

The tables offer monthly positions of the four brightest planets: Venus, Mars, Jupiter [Read More]


Astrophotography – Without a Telescope

Astrophotography – Without a Telescope

By Ralph O. Clements When I was invited to write about this subject for, I must say I was flattered and a bit flabbergasted too, as I do not consider myself an expert on the subject, nor a writer by any means, but just a guy who likes to go out at night [Read More]

Startrails – Software

Startrails – Software

Star trails, image credit: Ralph Clements Star trail images are beautiful to look at and they are captivating because they [Read More]

Eyepiece Projection

Eyepiece Projection

Eyepiece projection is a great way to take detailed shoots of moon and planets. Photographed objects in these [Read More]

Astro-Imaging for $100

Astro-Imaging for $100

Is is possible to make astro-images with entry level digital point-and-shoot cameras? The answer to that question is a [Read More]

RSS NASA Image of the day

  • Star Wanders Too Close to a Black Hole November 24, 2017
    This artist's rendering shows the tidal disruption event named ASASSN-14li, where a star wandering too close to a 3-million-solar-mass black hole was torn apart. The debris gathered into an accretion disk around the black hole.
  • The Beauty of Ice November 22, 2017
    Ice can be stunningly beautiful and also quite varied in its appearance.

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  • ESO Observations Show First Interstellar Asteroid is Like Nothing Seen Before November 20, 2017
    For the first time ever astronomers have studied an asteroid that has entered the Solar System from interstellar space. Observations from ESO’s Very Large Telescope in Chile and other observatories around the world show that this unique object was traveling through space for millions of years before its chance encounter with our star system. It […]


  • Integral orbits November 20, 2017
    Visualising 15 years in space for ESA’s Integral satellite
  • Fracture swarms on Mars November 16, 2017
    These striking features on Mars were caused by the planet’s crust stretching apart in response to ancient volcanic activity.

RSS Sky & Telescope – Observing

  • NGC 253: The Silver Coin Galaxy
    This November, point your binoculars towards the Silver Coin Galaxy — NGC 253, also known as the Sculptor Galaxy, is one of the brightest galaxies to spot. The post NGC 253: The Silver Coin Galaxy appeared first on Sky & Telescope.
    Mathew Wedel
  • This Week’s Sky at a Glance, November 24 – December 2
    When Fomalhaut is due south, you'll always find the first stars of Orion beginning to rise in the east, and the Pointers of the Big Dipper due north below Polaris. The post This Week’s Sky at a Glance, November 24 – December 2 appeared first on Sky & Telescope.
    Alan MacRobert
  • A Thrilling Trio of Variable Stars
    These three important, prototypical variable stars will hold your attention for nights on end: Delta Cephei, Mira, and Algol. The post A Thrilling Trio of Variable Stars appeared first on Sky & Telescope.
    Fred Schaaf

RSS Science Daily

  • How Earth stops high-energy neutrinos in their tracks
    For the first time, a science experiment has measured Earth's ability to absorb neutrinos -- the smaller-than-an-atom particles that zoom throughout space and through us by the trillions every second at nearly the speed of light. The experiment was achieved with the IceCube detector, an array of 5,160 basketball-sized sensors frozen deep within a cubic […]
  • Lightning, with a chance of antimatter
    Researchers find that lightning strikes causes photonuclear reactions in the atmosphere, creating antimatter.