Another long-lived NASA mission has come to an end, this one after more than seven years of dancing through the perilous belts of radiation around Earth.
Giant alien worlds with searing, close orbits to their host stars can inflate like balloons. Now astronomers have discovered one so puffy that it is one of the least dense planets ever discovered.
President Donald Trump lauded two NASA astronauts on the first all-female spacewalk in history Friday (Oct. 18), hailing their bravery and skill as they worked outside the International Space Station.
October's Orionid meteor shower is one of the most reliable of the annual displays of "shooting stars." Unfortunately, this year, the Orionids are going to face a handicap.
NASA astronauts Christina Koch and Jessica Meir ventured outside the International Space Station early this morning (Oct. 18) to embark on the first spacewalk in history to be conducted entirely by women.
Astronomers exposed acetylene ice -- a chemical that is used on Earth in welding torches and exists at Titan's equatorial regions -- at low temperatures to proxies of high-energy galactic cosmic rays.
Earth-like planets may be common in the universe, a new study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not unique.
'Weather' in clusters of galaxies may explain a longstanding puzzle. Scientists have now used sophisticated simulations to show how powerful jets from supermassive black holes are disrupted by the motion of hot gas and galaxies, preventing gas from cooling, which could otherwise form stars.
Hubble has given astronomers their best look yet at an interstellar visitor -- comet 2I/Borisov -- whose speed and trajectory indicate it has come from beyond our solar system. Comet 2I/Borisov is only the second such interstellar object known to have passed through the solar system.
For the first time, astronomers have witnessed 3D motions of gas in a planet-forming disk. At three locations in the disk around a young star called HD 163296, gas is flowing like a waterfall into gaps that are most likely caused by planets in formation. These gas flows have long been predicted and would directly influence the chemical composition of planet atmospheres.
At the center of a galaxy called NGC 1068, a supermassive black hole hides within a thick doughnut-shaped cloud of dust and gas. When astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) to study this cloud in more detail, they made an unexpected discovery that could explain why supermassive black holes grew so rapidly in the early Universe.
Astronomers have completed the largest survey to date of the faint outskirts of nearby galaxies, successfully testing a low-cost system for exploring these local stellar systems. The team find that the diameters of the galactic outskirts -- the haloes -- appear to correlate with the brightness and type of galaxy.
Researchers have produced crops in Mars and moon soil simulant developed by NASA. The research supports the idea that it would not only be possible to grow food on Mars and the moon to feed future settlers, but also to obtain viable seed from crops grown there.
Astronomers have used a massive cluster of galaxies as an X-ray magnifying glass to peer back in time, to nearly 9.4 billion years ago. In the process, they spotted a tiny dwarf galaxy in its very first, high-energy stages of star formation.
Astronomers have discovered that powerful winds driven by supermassive black holes in the centers of dwarf galaxies have a significant impact on the evolution of these galaxies by suppressing star formation.
New research sheds light on the ages of ice deposits reported in the area of the Moon's south pole -- information that could help identify the sources of the deposits and help in planning future human exploration.
Gas blown out of the Milky Way disk from exploding stars falls back onto the galaxy to form new generations of stars. In an effort to account for this recycling process, astronomers were surprised to find a surplus of incoming gas.
The solar system's newest interstellar visitor, Comet 2I/Borisov, bears a striking resemblance to the icy population of the outer solar system.
The post Interstellar Comet Borisov “Indistinguishable” from Solar System Comets appeared first on Sky & Telescope.
Four comets, a famous variable star, and sprinkles of dust from Halley's Comet are highlights of the October sky.
The post Autumn Comets, Mira’s Eye & The Orionid Meteor Shower appeared first on Sky & Telescope.
A new study suggests that pulsars are not the source of an unexpected surplus of antimatter particles detected by a space-based experiment. Dark matter remains a viable alternative explanation.
The post Should We Blame Pulsars for Too Much Antimatter? appeared first on Sky & Telescope.
NASA's Ionospheric Connection Explorer (ICON) launched successfully today to explore the boundary between Earth and space.
The post NASA Launches ICON to Explore Earth’s Ionosphere appeared first on Sky & Telescope.
Analysis by an independent team has ferreted out seven candidates for gravitational-wave events from merging black holes.
The post More Black Hole Mergers Found in LIGO Data appeared first on Sky & Telescope.
Barbara Wilson passed away on September 24, 2019, after battling cancer for several months. Barbara was very well known in the amateur astronomy community as a dedicated and talented deep-sky observer. But she was much more than that.
The post Barbara Wilson — A Remembrance appeared first on Sky & Telescope.
Astronomers have found 20 new moons circling Saturn — now you can help name them!
The post Help Name Saturn’s 20 Newfound Moons appeared first on Sky & Telescope.
The 2019 Nobel Prize in Physics goes to James Peebles and to Michel Mayor and Didier Queloz. The prize, which will be split in half, honors discoveries that have offered new perspectives on our place in the universe.
The post Nobel Prize Honors Exoplanets, Big Bang Discoveries appeared first on Sky & Telescope.
NASA engineers hope to use the scoop at the end of the lander's robotic arm to get the Insight lander's heat probe burrowing once again.
The post Work to Save NASA’s “Mole” on Mars Continues appeared first on Sky & Telescope.
Using the light cast by galaxies bursting with new stars, astronomers have mapped out a piece of the cosmic web 12 billion light-years from Earth.
The post Best Image Yet of the Cosmic Web appeared first on Sky & Telescope.
GDACS - Global Disaster Alert and Coordination System
From 19/10/2019 to 19/10/2019, a Tropical Depression (maximum wind speed of 167 km/h) TWENTYTWO-19 was active in NWPacific. The cyclone affects these countries: Northern Mariana Islands, Guam (vulnerability Medium). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0.
From 17/10/2019 to 19/10/2019, a Tropical Storm (maximum wind speed of 74 km/h) OCTAVE-19 was active in EastPacific. The cyclone affects these countries: [unknown] (vulnerability [unknown]). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0.
On 10/17/2019 7:34:06 PM, an earthquake occurred in Papua New Guinea potentially affecting 140000 people within 100km. The earthquake had Magnitude 5.5M, Depth:15.89km.
From 17/10/2019 to 19/10/2019, a Tropical Storm (maximum wind speed of 102 km/h) NESTOR-19 was active in Atlantic. The cyclone affects these countries: United States (vulnerability Low). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0.
From 16/10/2019 to 19/10/2019, a Tropical Storm (maximum wind speed of 111 km/h) NEOGURI-19 was active in NWPacific. The cyclone affects these countries: Japan, (vulnerability Low). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0.
On 10/16/2019 11:37:06 AM, an earthquake occurred in Philippines potentially affecting 7900000 people within 100km. The earthquake had Magnitude 6.4M, Depth:14.12km.
From 14/10/2019 to 16/10/2019, a Tropical Depression (maximum wind speed of 74 km/h) FIFTEEN-19 was active in Atlantic. The cyclone affects these countries: , Cape Verde (vulnerability [unknown]). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0.
From 12/10/2019 to 16/10/2019, a Tropical Depression (maximum wind speed of 83 km/h) EMA-19 was active in CentralPacific. The cyclone affects these countries: [unknown] (vulnerability [unknown]). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 0.
