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 2018-07-19 22:00 

Sky & Telescope

60-Second Astro News: Must-See Images of the Week...

Catch up on this week in astronomy news with a trio of images: a pair of near-Earth asteroid twins, ground-based views that beat Hubble's, and the tumultuous galactic center. The post 60-Second Astro News: Must-See Images of the Week appeared first on...

 2018-07-17 21:25 

Sky & Telescope

Jupiter's Moons: 12 More Found, 79 Known...

Over the past 18 months, astronomers have painstakingly tracked a dozen tiny moons that they found circling the giant planet Jupiter. The post Jupiter's Moons: 12 More Found, 79 Known appeared first on Sky & Telescope ....

 2018-07-17 16:01 

Sky & Telescope

PanSTARRS Comet, Rocked by Outburst, Goes Green...

Comet PanSTARRS (C/2017 S3) has erupted again! Now bright enough to see in binoculars, it might become a naked-eye object if it survives until perihelion. The post PanSTARRS Comet, Rocked by Outburst, Goes Green appeared first on Sky & Telescope ....

 2018-07-13 14:35 

Sky & Telescope

What Can Lunar Eclipses Do For Science?...

On the night of July 27, 2018, the longest total lunar eclipse for the next 105 years will be visible across parts of Europe, Africa, Asia and Australia. Six months later, on January 20, 2019, there will be the 'Great American' lunar eclipse, wher...

 2018-07-13 13:56 

Sky & Telescope

Planet-Protection Policies: Due For Revision?...

A new National Academies study assesses NASA's efforts to protect neighboring worlds from contamination and recommends ways the space agency could do a better job. The post Planet-Protection Policies: Due For Revision? appeared first on Sky & Telescop...

 2018-07-12 14:52 

Sky & Telescope

Identifying Life from Varying Atmospheres...

There's no hiding — changes in Earth's atmosphere over the seasons are a dead giveaway to the fact that Earth hosts life. Now a new study explores whether we might use atmospheric seasonality like Earth's to detect life on other planets....

 2018-07-11 16:35 

Sky & Telescope

Observers Anxious for Dust to Settle as Mars Opposition Approaches...

With opposition only weeks away, will the current global dust storm finally break? We look at the prospects. The post Observers Anxious for Dust to Settle as Mars Opposition Approaches appeared first on Sky & Telescope ....

 2018-07-10 15:55 

Sky & Telescope

Crescent Moon and Venus Will Bedazzle on Sunday...

Hanging dramatically in the west during twilight next Sunday evening (July 15, 2018) will be a bright "star" and crescent: Venus and the Moon. The cosmic couple will be quite the eye-catcher if your sky is clear. The post Crescent Moon and Venus W...

 2018-07-10 15:53 

Sky & Telescope

Nautilus Expedition Recovers Possible Seafloor Meteorites...

The expedition off the coast of Washington state performs a first, recovering meteorite fragments from a documented fall. The post Nautilus Expedition Recovers Possible Seafloor Meteorites appeared first on Sky & Telescope ....

 2018-07-09 13:00 

Sky & Telescope

First Confirmed Image of Newborn Planet...

Astronomers using a new instrument on the Very Large Telescope in Chile have directly imaged a newborn planet. Our understanding of planet formation is often shrouded in theoretical models. But now, scientists have directly observed a new planet in the ga...

 2018-07-06 18:09 

Sky & Telescope

60-Second Astro News: Impact Shaped Ice Giant, Jupiter's Moons Cause Complicated Aurorae & Eta Carinae, the Cosmic Ray Gun...

This week in astronomy: Simulations show what kind of cataclysmic impact shaped the ice giant Uranus's evolution, new observations from Juno reveal complex auroral patterns due to Jupiter's moons, and NuSTAR provides conclusive evidence that the s...

 2018-07-06 15:06 

Sky & Telescope

Don't Miss Aldebaran's Last Occultation Till 2033...

The last and one of the most picturesque occultations of Aldebaran by the Moon happens on Tuesday morning, July 10. Catch it or wait 15 years for the next! The post Don't Miss Aldebaran's Last Occultation Till 2033 appeared first on Sky & Telescop...

 2018-07-06 14:19 

Sky & Telescope

Organics Inside Enceladus: Complex Enough for Life?...

Scientists aren't comfortable yet saying that organics on Saturn's icy moon arose from life, but they have an idea of what to look for next. The post Organics Inside Enceladus: Complex Enough for Life? appeared first on Sky & Telescope ....

 2018-07-03 14:32 

Sky & Telescope

Fireworks, Planets, Comets, a Nova — July's Got it All!...

July's a busy month for skywatching. Not only are five bright planets in view, but three comets and a newly-discovered nova are also observable. And it all starts with a bang on Independence Day. The post Fireworks, Planets, Comets, a Nova — Jul...

 2018-07-02 13:00 

Sky & Telescope

Wheel-spoke Magnetic Field in Supernova 1987A...

Researchers have mapped the magnetic field in Supernova 1987A, shedding light on how stellar blasts act as particle accelerators. The post Wheel-spoke Magnetic Field in Supernova 1987A appeared first on Sky & Telescope ....

 2018-06-29 13:00 

Sky & Telescope

Scientists See Strong Evidence of Rare Middle-weight Black Hole...

New observations give more fuel to the concept of intermediate-mass black holes. The post Scientists See Strong Evidence of Rare Middle-weight Black Hole appeared first on Sky & Telescope ....

 2018-06-29 12:44 

Sky & Telescope

Tour July's Sky: Planet Parade...

This month's astronomy podcast tells you how to spot a five bright planets — Mercury, Venus, Mars, Jupiter, and Saturn — in the evening sky. The post Tour July's Sky: Planet Parade appeared first on Sky & Telescope ....

 2018-06-27 19:15 

Sky & Telescope

NASA Sets March 2021 Launch Date for James Webb Space Telescope...

Despite significant cost overruns, NASA's James Webb Space Telescope is now set for a March 2021 launch — assuming it receives Congressional reauthorization. NASA has announced a commitment to a March 30, 2021, launch date for its James Webb Spa...

 2018-06-27 17:00 

Sky & Telescope

'Oumuamua Was a Comet After All...

Researchers have found that 'Oumuamua — the first confirmed object to enter the solar system from interstellar space — was a comet, releasing just enough gas to subtly change its course. The post 'Oumuamua Was a Comet After All appeare...

 2018-06-27 14:18 

Sky & Telescope

Hayabusa 2: Welcome to Ryugu...

We got a peek at a new worldlet in the inner solar system this week, as the Japanese Aerospace Agency's (JAXA) Hayabusa-2 gave us our first good looks at the tiny asteroid 162173 Ryugu. The post Hayabusa 2: Welcome to Ryugu appeared first on Sky & Tel...

 2018-06-25 14:01 

Sky & Telescope

Best Test of General Relativity on Galaxy Scales...

Astronomers have conducted the best, galaxy-scale test of general relativity yet, and it rules out some (but not all) theories of modified gravity. The post Best Test of General Relativity on Galaxy Scales appeared first on Sky & Telescope ....

 2018-06-22 14:57 

Sky & Telescope

Martian Supervolcano Created Mysterious Rock Formation...

Scientists have discovered that a supervolcano likely created a mysterious rock formation on Mars some 3 billion years ago. The post Martian Supervolcano Created Mysterious Rock Formation appeared first on Sky & Telescope ....

 2018-06-22 14:00 

Sky & Telescope

Mars Dust Storm Grows — Curiosity's Skies Darkening...

The dust storm on Mars that broke out at the end of May is now affecting the skies across the entire planet. The post Mars Dust Storm Grows — Curiosity's Skies Darkening appeared first on Sky & Telescope ....

 2018-06-22 12:00 

Sky & Telescope

Big Dust Storm Blows up on Mars (Updated)...

Will Mars soon be hidden under a veil of dust? Let's hope not. We explore the current storm and the planet's upcoming close opposition. The post Big Dust Storm Blows up on Mars (Updated) appeared first on Sky & Telescope ....

 2018-06-21 20:54 

Sky & Telescope

Pulsar Limits "Fifth Force" Interactions with Dark Matter...

A recent experiment to better understand the nature of dark matter constrains a possible "fifth force" of nature to almost zero. The post Pulsar Limits "Fifth Force" Interactions with Dark Matter appeared first on Sky & Telescope ....

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