Universe Today 5 May 2020, 20:36 UTC Our Sun is the source of life on Earth. Its calm glow across billions of years has allowed life to evolve and flourish on our world. This does not mean our Sun doesn’t have an active side. We have observed massive solar flares, such as the 1859 Carrington event, which produced northern lights as far south as the Caribbean, and drove electrical currents in telegraph lines. If such a flare occurred in Earth’s direction today, it would devastate our electrical infrastructure. But fortunately for us, the Sun is mostly calm. Unusually calm when compared to other stars.
Bad Astronomy 5 May 2020, 13:00 UTC Globular clusters are one of my favorite kind celestial objects. These are roughly spherical stellar cities, some with hundreds of thousands of stars in them (and a few topping a million). About 160 of them are known to orbit the Milky Way galaxy, and through an eyepiece the nearer ones are staggeringly beautiful, like a buzzing beehive of jewel-like stars.
Universe Today 5 May 2020, 08:48 UTC The prospect of mining asteroids and the Moon is on a lot of peoples’ minds lately. Maybe it’s all the growth that’s happened in the commercial aerospace industry in the past few decades. Or perhaps it’s because of Trump’s recent executive order to allow for asteroid and lunar mining. Either way, there is no shortage of entrepreneurs and futurists who can’t wait to start prospecting and harvest the natural bounty of space!
Many Worlds 4 May 2020, 15:19 UTC It was not all that long ago that a “map” of our moon, of Mars, of a large asteroid such as Vesta, of Titan, or of any hard-surfaced object in our solar system would have some very general outlines, some very large features identified, and then the extraterrestrial equivalent of the warning on Earth maps of yore that beyond a certain point “there be dragons.” Constructing a map of the topography and geology of a distant surface requires deep understanding and data and lot of hard work.
Bad Astronomy 4 May 2020, 13:00 UTC Astronomers have determined that, on average, the Sun is quieter than other stars magnetically, and it's not clear why. The long-term meaning of this finding isn't clear either, but it implies the Sun could get even more active than it is now.