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Return to article list Find the few galaxies floating in a cosmic ocean of nothingness. Four “bright” members of the Boötes Void are around magnitude 15. Each field measures 5' on a side. Credit: digital sky studio I don't normally write much about deep, “holy grail” objects, but in the case of the Boötes Void
Return to article list Psyche has a nearly circular orbit in the asteroid belt, so it is unlikely to have come close to Earth. The metallic asteroid Psyche, shown in this artist's concept, may be the exposed iron-nickel core, or a fragment of one, of a larger object in the early stages of the solar
Return to article list The expansion of the universe explains how it can be much larger than 13.8 billion light years. How can the visible universe have a radius of 46 billion light years when the universe is only 13.8 billion years old? And how can we detect light from 46 billion light years away
Return to article list The expansion of the universe explains how it can be much larger than 13.8 billion light years. How can the visible universe have a radius of 46 billion light years when the universe is only 13.8 billion years old? And how can we detect light from 46 billion light years away
Celestron's next-generation StarSense Autoguider (SSAG) can be mounted on many brands of telescopes. A compatibility list is available on the Celestron website. Credit: Celestron Maybe you've always wanted to try astroimaging, but were intimidated by the technical aspects, the equipment requirements, the level of experience needed… you know, the work. The hardware requirements alone can
Return to article list This unnamed lunar feature has had many names, including Mons Undset after the 1928 Nobel Prize winner Sigrid Undset. An Apollo 15 image of Lambert Crater with Mons Undset to the west (right, where we added a circle) casting a pyramidal shadow. Mons Undset is named after the novelist Sigrid Undset.
