Hubblecast HD 2 Apr 2018, 15:00 UTC Astronomers have used Hubble to make an incredible discovery — they have observed the most distant star ever seen. The bright blue star existed only 4.4 billion years after the Big Bang. This incredible distant star allows astronomers to learn more about the formation and evolution of stars in the early Universe.
Are We Alone? 2 Apr 2018, 12:27 UTC Stephen Hawking felt gravity’s pull. His quest to understand this feeble force spanned his career, and he was the first to realize that black holes actually disappear – slowly losing the mass of everything they swallow in a dull, evaporative glow called Hawking radiation. But one of gravity’s deepest puzzles defied even his brilliant mind. How can we connect theories of gravity on the large scale to what happens on the very small? The Theory of Everything remains one of the great challenges to physicists.
StarDate Online 2 Apr 2018, 05:00 UTC Every spacecraft that visits one of the planets reveals new details about its target world. Juno, for example, is telling scientists that the interior of Jupiter is quite different from what they expected. Juno arrived at Jupiter almost two years ago. It’s the ninth spacecraft to visit the planet, and the second to orbit it.
The Star Spot
Episode 144: A Rough Upbringing: The Discovery of Stars in the Galaxy’s Core, with Farhad Yusef-Zadeh2 Apr 2018, 01:00 UTC The gravity, radiation and tidal forces at the very core of the Milky Way is kind of intense. That’s why astronomers have long doubted the possibility of star formation in such a hostile environment. And then everything changed with the discovery last fall of 11 sun-like stars living closer to the supermassive black hole at the centre of our galaxy then the distance between our sun and its closest neighbour. What does this breakthrough mean for our understanding of star formation and the possibility of life in what we once imagined were impossibly extreme environments? Today we’re joined here at The Star Spot by the discovery team’s leader Farhad Yusef-zadeh.
StarDate Online 1 Apr 2018, 05:00 UTC Two planets are staging a beautiful conjunction in the dawn sky. Mars and Saturn are in the south at first light, separated by just a couple of degrees — the width of a finger held at arm’s length. Saturn is to the upper left of slightly brighter Mars. They’ll be at their closest tomorrow, but will stay close together for several days as Mars begins to pull away from Saturn. Saturn and Mars look much alike right now, but that’s an illusion. The two worlds could hardly be more different.
SpaceTime with Stuart Gary
25: Alien asteroid likely came from a binary star system - SpaceTime with Stuart Gary Series 21 Episode 2530 Mar 2018, 06:21 UTC New research suggests that Oumuamua, the rocky object identified as the first confirmed interstellar asteroid, very likely came from a binary star system.
Sky & Telescope 30 Mar 2018, 02:10 UTC This month's astronomy podcast guides you around the nighttime sky during April, giving you easy-to-follow help for finding bright planets and key stars after the Sun goes down. April is one of the better months for stargazing. Spring evenings are generally pleasant, and the bugs haven’t taken control — yet! Even with daylight time in effect, evening twilight comes fairly early. You’ll find that the Sun sets between 7:30 and 8:00 p.m. during most of this month, and by 9 p.m. it’s good and dark.
StarDate Online 29 Mar 2018, 05:00 UTC To see objects that are ever fainter and farther away, astronomers are building bigger telescopes. To see interesting objects that are bright or close by, though, small can work just fine. Last year, for example, European astronomers completed a second station designed to hunt for planets orbiting bright, nearby stars. The two stations are known as MASCARA. Each one consists of five commercially available digital cameras, each with its own 24-millimeter lens. One is in the Canary Islands, and the other is in Chile.
SpaceTime with Stuart Gary 28 Mar 2018, 11:09 UTC A new study has discovered that all galaxies rotate around their galactic centre once every billion years, no matter how big they are -- regardless of their mass or density.