SpaceFlight Insider 14 Sep 2018, 07:00 UTC New Horizons‘ scientists successfully observed Ultima Thule, the spacecraft’s second target, from Senegal on Aug. 4, 2018, when the Kuiper Belt Object (KBO) passed in front of an occulted star.Read more at http://www.spaceflightinsider.com/missions/solar-system/new-horizons-scientists-successfully-observe-second-target-during-stellar-occultation/#BXdsg05ISvRKVbmp.99
Astrobiology Magazine 13 Sep 2018, 16:00 UTC An international team of scientists has found a way to recover the birth places of stars in our Galaxy.
Starts With a Bang! 13 Sep 2018, 14:01 UTC When we first began formulating physical laws, we did so empirically: through experiments. Drop a ball off a tower, like Galileo may have done, and you can measure both how far it falls and how long it takes to hit the ground. Release a pendulum, and you can find a relationship between the pendulum’s length and the amount of time it takes to oscillate. If you do this for a number of distances, lengths, and times, you’ll see a relationship emerge: the distance of a falling object is proportional to the time squared; the period of a pendulum is proportional to the square root of the pendulum’s length. But to turn those proportionalities into an equal sign, you need to get that constant right.
DSFP's Spaceflight History Blog 13 Sep 2018, 03:13 UTC Serious plans for space activities that include astronauts take into account human frailties. Long stays in the space environment aboard Earth-orbiting space stations have revealed some: for example, loss of calcium in load-bearing bones in microgravity. Other frailties have been a part of human experience for many millennia: for example, forgetfulness over time.
Centauri Dreams 12 Sep 2018, 17:29 UTC Thinking about supplying a young planet with water, the mind naturally heads for the outer reaches of the Solar System. After all, beyond the ‘snowline,’ where temperatures are cold enough to allow water to condense into ice grains, volatiles are abundant (this also takes in methane, ammonia and carbon dioxide, all of which can condense into ice grains). The idea that comets or water-rich asteroids bumping around in a chaotic early Solar System could deliver the water Earth needed for its oceans makes sense, given our planet’s formation well inside the snowline.
Astro Bob 12 Sep 2018, 16:31 UTC Look to the west at dusk this evening and give Venus a goodbye kiss. If you haven’t noticed already, Venus has been practically MIA these recent weeks as it tracks back toward the sun at dusk. For now, the planet stands only about 4° high 30 minutes after sunset from my northern location. To spot it, observers in the northern U.S. and Canada have to find a wide open horizon and be on time — it’s only visible for a half-hour or so beginning shortly after sunset. Happily, the further south you live, the higher the planet stands and the longer it will be in view. So what gives? Conjunction with the sun doesn’t occur until October 25, so why is the planet so low right now even though today it’s 42° from the sun — just a few degrees shy of it greatest apparent distance? It has to do with the angle the ecliptic, the path followed by the moon, sun and planets around the sky.
Starts With a Bang! 12 Sep 2018, 14:01 UTC For perhaps 100 million years, there were no stars in the Universe. What was it like then? The earliest stages of the Universe were extraordinarily eventful in bringing us about. Cosmic inflation happened and then ended, giving rise to the Big Bang...
SPACE.com 12 Sep 2018, 11:15 UTC The European Southern Observatory's (ESO) Very Large Telescope (VLT) in Chile has a busy observation schedule, but sometimes cloudy or moonlit skies mean a temporary halt to scientific measurements. During those times, the observatory team chooses interesting and beautiful objects across the southern skies to image in colour.
All About Space 12 Sep 2018, 08:38 UTC A paper by Planetary Science Institute Research Scientist Jordan K. Steckloff and Senior Scientist Nalin H. Samarasinha says that periodic landslides and avalanches, known as mass wasting, may be responsible for keeping comets active over a long time.