Echoing summer’s great arc of planets at dawn, winter presents the full octet again, this time splayed across the evening sky.
As before, feel free to add the planet you're standing on to complete the octet.
On December 18th, I checked the visibility of Venus and Mercury from my snowy outpost here in Duluth, Minnesota. Brighter Venus was obvious in the 8×42's about 15 minutes after sunset, and I could see both with the naked eye (Mercury faintly at magnitude –0.6) some 35 minutes past sundown.
Potentially habitable Earth-like worlds found in our backyard | Space
Astronomers have discovered two potentially habitable worlds orbiting a red dwarf star in our cosmic backyard. The extra-solar planets or "exoplanets" are located just 16 light-years away and have masses similar to that of our planet.
"Nature seems bent on showing us that Earth-like planets are very common," study author Alejandro Suárez Mascareño of the Instituto de Astrofisica de Canarias (IAC) said in a statement (opens in new tab) .
Astronomers Scanned 12 Planets for Alien Signals While They Were in Front of Their Stars - ...
The Robert C. Byrd Green Bank Telescope (GBT), part of the Green Bank Observatory in West Virginia, is the world’s premiere single-dish radio telescope.
Recently, an international team of researchers from the SETI Institute, Breakthrough Listen, and multiple universities scanned twelve exoplanets for signs of technological activity (aka. “technosignatures”).
Some stars strip their planets' atmosphere — a new NASA telescope image pinpoints when
Young stars can erase the atmospheres of their planets. A new Chandra X-ray Observatory Recently, astronomers made headway into their investigation of these stars' potency.
The best tool that Konstantin Getman , a research professor at Penn State University, and his colleagues had to use was Chandra. That's because stars with higher magnetic-field activity appear brighter in X-rays, according to a December 15 announcement from NASA.
Assembly Begins on NASA's Next Tool to Study Exoplanets
The Coronagraph Instrument on NASA's Nancy Grace Roman Space Telescope will study planets around other stars. Putting it together will require a highly choreographed dance.
The Coronagraph Instrument team has already designed the cutting-edge instrument and built the components. Now they have to put the pieces together and run tests to make sure they operate as intended.
NASA's Pluto Spacecraft Begins New Mission at the Solar System's Edge - Scientific American
For New Horizons, those “unique things” include unprecedented studies of the planets Uranus and Neptune, sampling of the local dust, studies of the background light in the universe, and more.
Since June 1 the spacecraft has been in hibernation, with its major systems switched off to reserve power, while a gentle spin of five revolutions per minute keeps the spacecraft on course without using up its fuel.
Evidence For The Volatile-rich Composition Of O 1.5-R⊕ Planet - Astrobiology
The population of planets smaller than approximately 1.7 R⊕ is widely interpreted as consisting of rocky worlds, generally referred to as super-Earths.
This picture is largely corroborated by radial-velocity (RV) mass measurements for close-in super-Earths but lacks constraints at lower insolations.
Why Extraterrestrials Haven't Contacted Earth Yet | Time
N obody knows for certain what the Nobel Prize-winning physicist Enrico Fermi did or didn’t say at the lunch with colleagues at the Los Alamos National Laboratory in New Mexico that took place in 1950.
The first and most conspicuous sign we have given off that we are just such a species are the radio signals that we transmit to one another but that leak through the atmosphere and stream out into space. It has been only about a century since we began emitting those unintentional beacons.
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