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Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid
These are organized by a classification scheme developed exclusively for Cosma. More…
Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models. It is the practice and study of observing celestial objects with the use of telescopes and other astronomical instruments.
Galileo Galilei turned a telescope to the heavens and recorded what he saw. Since that time, observational astronomy has made steady advances with each improvement in a variety astronomical instruments and related methods. — Wikipedia
Observing News & Current Celestial Events – Sky & Telescope The essential guide to astronomy / All Sky & Telescope (www.skyandtelescope.com) content is copyrighted. Please contact us for reuse permissions.
Will Sirius Disappear on February 18th?
by Bob King on February 13, 2019 at 2:45 pm
On Monday night, February 18th, observers in the western U.S. and Mexico may see the occultation of a lifetime when a tiny asteroid momentarily blots out the night sky's brightest star. The post Will Sirius Disappear on February 18th? appeared first on Sky & Telescope. […]
Comet Iwamoto Ascends and Brightens
by Bob King on February 6, 2019 at 6:27 pm
Comet Iwamoto is visible as a binocular target from a dark sky. Follow it this week as it passes from Virgo into Leo. The post Comet Iwamoto Ascends and Brightens appeared first on Sky & Telescope. […]
February Sky Tour: Dawn & Dusk Planets
by Kelly Beatty on February 1, 2019 at 11:24 am
February's Sky Tour podcast urges you to get outside early to gaze on three bright planets — then return in the evening to spot two more. The post February Sky Tour: Dawn & Dusk Planets appeared first on Sky & Telescope. […]
Astronomers Identify Weather Cycle on Jupiter
by Sean Walker on January 24, 2019 at 1:00 pm
Astronomers have identified a periodic clearing at the gas giant's equator; amateurs may have spotted the change at the end of 2018. The post Astronomers Identify Weather Cycle on Jupiter appeared first on Sky & Telescope. […]
A Space Rock Strikes Moon During the Total Lunar...
by Bob King on January 23, 2019 at 3:38 pm
The Moon got bonked by a space rock during Sunday's total lunar eclipse. Take a look! The post A Space Rock Strikes Moon During the Total Lunar Eclipse appeared first on Sky & Telescope. […]
Space Telescopes News -- ScienceDaily Space Telescopes. Astronomy articles and pictures from NASA's Hubble Space Telescope and Chandra X-Ray Telescope and many other leading astronomy institutes from around the world.
Habitable Zone Planet Finder enables discovery of...
on February 21, 2019 at 2:50 pm
A new astronomical spectrograph provides the highest precision measurements to date of infrared signals from nearby stars, allowing astronomers to detect planets capable of having liquid water on their surfaces that orbit cool stars outside our solar system. […]
Tiny Neptune moon spotted by Hubble may have...
on February 21, 2019 at 2:50 pm
After several years of analysis, a team of planetary scientists using NASA's Hubble Space Telescope has at last come up with an explanation for a mysterious moon around Neptune that they discovered with Hubble in 2013. […]
'Astrocomb' opens new horizons for planet-hunting...
on February 19, 2019 at 6:27 pm
The hunt for Earth-like planets, and perhaps extraterrestrial life, just got more precise, thanks to record-setting starlight measurements made possible by the 'astrocomb.' […]
Citizen scientist finds ancient white dwarf star...
on February 19, 2019 at 6:27 pm
The oldest and coldest known white dwarf -- an Earth-sized remnant of a sun-like star that has died -- could be the first known white dwarf with multiple dust rings. The discovery forces researchers to reconsider models of planetary systems. […]
Gravitational waves will settle cosmic conundrum
on February 14, 2019 at 4:55 pm
Measurements of gravitational waves from approximately 50 binary neutron stars over the next decade will definitively resolve an intense debate about how quickly our universe is expanding, according to new findings. […]
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
Solving the jet/cocoon riddle of a gravitational...
on February 22, 2019 at 12:08 pm
An international research team including astronomers from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has combined radio telescopes from five continents to prove the existence of a narrow stream of material, a so-called jet, emerging from the only gravitational wave event involving two neutron stars ever observed. With its high sensitivity and excellent performance, the 100-meter radio telescope in Effelsberg played an important role in the observations. […]
Habitable zone planet finder enables discovery of...
on February 21, 2019 at 2:09 pm
A new astronomical spectrograph built by a Penn State-led team of scientists provides the highest precision measurements to date of infrared signals from nearby stars, allowing astronomers to detect planets capable of having liquid water on their surfaces that orbit cool stars outside our solar system. The Habitable Zone Planet Finder (HPF) allows precise measurement of a star's radial velocity, measured by the subtle change in the color of the star's spectra as it is tugged by an orbiting […]
Solar wind fills research sails at space weather...
on February 21, 2019 at 12:40 pm
Researchers at CU Boulder are starting work on a new collaborative grant from NASA and the National Oceanic and Atmospheric Administration (NOAA) that will improve solar wind modeling. […]
In colliding galaxies, a pipsqueak shines bright
on February 20, 2019 at 8:21 pm
In the nearby Whirlpool galaxy and its companion galaxy, M51b, two supermassive black holes heat up and devour surrounding material. These two monsters should be the most luminous X-ray sources in sight, but a new study using observations from NASA's NuSTAR (Nuclear Spectroscopic Telescope Array) mission shows that a much smaller object is competing with the two behemoths. […]
Cosmic dust forms in supernovae blasts
on February 20, 2019 at 3:10 pm
Scientists claim to have solved a longstanding mystery as to how cosmic dust, the building blocks of stars and planets, forms across the Universe. […]