Newly Discovered Comet Is Likely Interstellar Visitor

Comet C/2019 Q4 as imaged by the Canada-France-Hawaii Telescope on Hawaii’s Big Island on Sept. 10, 2019. (Credits: Canada-France-Hawaii Telescope)

PASADENA, Calif. (NASA PR) — A newly discovered comet has excited the astronomical community this week because it appears to have originated from outside the solar system. The object — designated C/2019 Q4 (Borisov) — was discovered on Aug. 30, 2019, by Gennady Borisov at the MARGO observatory in Nauchnij, Crimea. The official confirmation that comet C/2019 Q4 is an interstellar comet has not yet been made, but if it is interstellar, it would be only the second such object detected. The first, ‘Oumuamua, was observed and confirmed in October 2017.

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NASA Gives a Financial Boost to In-Space Welding Projects

by Douglas Messier
Managing Editor

NASA selected two projects for funding focused on developing in-space welding technologies as part of its recent round of Small Business Innovation Research (SBIR) awards.

The space agency selected Busek Company of Natick, Mass., and Made in Space of Jacksonville, Fla., for phase 1 awards worth up to $125,000 apiece for six months.

“Busek proposes to initiate the development of a semi-autonomous, teleoperated welding robot for joining of external (or internal metallic uninhabited volume at zero pressure) surfaces in space,”according to the proposal summary. “This welding robot will be an adaptation of a versatile Busek developed system called SOUL (Satellite On Umbilical Line) with a suitable weld head attached to it.

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UK Scientists to Lead ESA’s New Comet Interceptor Mission

Comet Interceptor concept (Credit: ESA)

SWINDON, UK (UK Space Agency PR) — A new mission called Comet Interceptor, which was proposed by the UK, has been targeted for launch by the European Space Agency in 2028.

Comet Interceptor would be the first mission to travel to a comet which has never previously encountered the inner Solar System.

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ESA’s New Mission to Intercept a Comet

Comet Interceptor concept (Credit: ESA)

PARIS, 19 June 2019 (ESA PR) — ‘Comet Interceptor’ has been selected as ESA’s new fast-class mission in its Cosmic Vision Programme. Comprising three spacecraft, it will be the first to visit a truly pristine comet or other interstellar object that is only just starting its journey into the inner Solar System.

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NASA, FEMA, International Partners Plan Asteroid Impact Exercise

Asteroids compared to Didymoon (Credit: Ian Carnelli adapting Planetary Society – E. Lakdawalla image)

WASHINGTON (NASA PR) — While headlines routinely report on “close shaves” and “near-misses” when near-Earth objects (NEOs) such as asteroids or comets pass relatively close to Earth, the real work of preparing for the possibility of a NEO impact with Earth goes on mostly out of the public eye.

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Rosetta’s Comet Sculpted by Stress

Single frame enhanced NavCam image taken on 27 March 2016, when Rosetta was 329 km from the nucleus of Comet 67P/Churyumov-Gerasimenko. The scale is 28 m/pixel and the image measures 28.7 km across. (Credit:  ESA/Rosetta/NavCam)

18 February 2019

MARSEILLE, France (ESA PR) — Feeling stressed? You’re not alone. ESA’s Rosetta mission has revealed that geological stress arising from the shape of Comet 67P/Churyumov–Gerasimenko has been a key process in sculpting the comet’s surface and interior following its formation.

Small, icy comets with two distinct lobes seem to be commonplace in the Solar System, with one possible mode of formation a slow collision of two primordial objects in the early stages of formation some 4.5 billion years ago. A new study using data collected by Rosetta during its two years at Comet 67P/C-G has illuminated the mechanisms that contributed to shaping the comet over the following billions of years.

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Massive Impact Crater from a Kilometer-wide Iron Meteorite Discovered in Greenland

COPENHAGEN (University of Copenhagen PR) — An international team lead by researchers from the Centre for GeoGenetics at the Natural History Museum of Denmark, University of Copenhagen have discovered a 31-km wide meteorite impact crater buried beneath the ice-sheet in the northern Greenland. This is the first time that a crater of any size has been found under one of Earth’s continental ice sheets. The researchers worked for last three years to verify their discovery, initially made in the 2015. The research is described in a new study just published in the internationally recognized journal Science Advances.

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Cosmic Detective Work: Why We Care About Space Rocks

This artist’s concept depicts the spacecraft of NASA’s Psyche mission near the mission’s target, the metal asteroid Psyche. (Credits: NASA/JPL-Caltech/Arizona State Univ./Space Systems Loral/Peter Rubin)

By Elizabeth Landau
NASA

The entire history of human existence is a tiny blip in our solar system’s 4.5-billion-year history. No one was around to see planets forming and undergoing dramatic changes before settling in their present configuration. In order to understand what came before us — before life on Earth and before Earth itself — scientists need to hunt for clues to that mysterious distant past.

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MASCOT’s Asteroid Landing – Preparations, Risks and Last-minute Decisions

Asteroid Ryugu photographed by Japan’s Hayabusa2 spacecraft. (Credit: JAXA)

COLOGNE, Germany (DLR PR) — Scientists and engineers have been waiting nearly four years for the Japanese Hayabusa2 spacecraft – which is carrying the Mobile Asteroid Surface Scout (MASCOT) lander that was developed and constructed by the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) – to reach its destination: the asteroid Ryugu. With the approach and arrival having taken place on 27 June 2018, the landing is now within reach.

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Russian Nuclear Agency Explores How to Prevent Armageddon

Bruce Willis in Armageddon.

Tass reports that Russia’s state nuclear corporation, Rosatom, is exploring ways to blow up asteroids before they blow us up.

“Our study is only a part of the quest to create an asteroid protection system. The priorities here are detection, classification and high-precision monitoring of a celestial body. After that, a bomb should be designed, which would be safe enough during the launch. A carrier rocket will have to be designed, too,” said Vladimir Rogachev, the deputy head of the laser physics institute at the Russian Federal Nuclear Center (VNIIEF), part of the Rosatom corporation.

“This is an international task of impressive scope. We have something to offer. But there are also things that we need to borrow,” he went on.

“Regretfully, international politics and the current state of international relations necessitate a different format of communications, so we have to wait. But we should not procrastinate: when a dangerous asteroid approaches the Earth, it will be too late,” the researcher added.

Rogachev said that VNIIEF scientists have “baked” an artificial chondrite, the most popular type of asteroids, to study its qualities. According to their calculations, if a 200-meter asteroid approaches the Earth, a rocket should be launched approximately a month before the planned impact, to smash the celestial body into small parts that would burn upon entering the atmosphere.

“Yes, some parts will reach the surface of the planet, but, due to their small size, there will be no apocalypse,” he said. “This technology would be sufficient to destroy an object similar to the Tunguska meteor.”











Interstellar Visitor is Really a Comet Not an Asteroid

Artist impression of ‘Oumuamua (Credit: ESA/Hubble, NASA, ESO, M. Kornmesser)

PARIS (ESA PR) — An object from another star system that made a brief appearance in our skies guised as an asteroid turns out to be a tiny interstellar comet.

‘Oumuamua, a name that reflects the Hawaiian meaning for ‘a messenger from afar, arriving first’, was discovered by astronomers working with the Pan-STARRS survey in Hawaii in October last year as the object came close to Earth’s orbit. Follow-up observations by ESA’s Optical Ground Station telescope in Tenerife, Canary Islands, and other telescopes around the world helped determine its trajectory.

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NASA’s NEOWISE Asteroid-Hunter Spacecraft Releases Fourth Years of Survey Data

NEOWISE (Credit; NASA)

PASADENA, Calif. (NASA PR) — NASA’s Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has released its fourth year of survey data. Since the mission was restarted in December 2013, after a period of hibernation, the asteroid- and comet-hunter has completely scanned the skies nearly eight times and has observed and characterized 29,375 objects in four years of operations. This total includes 788 near-Earth objects and 136 comets since the mission restart.

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NASA Invests in Concept Development for Missions to Comet, Saturn Moon Titan

CAESAR (Comet Astrobiology Exploration SAmple Return) spacecraft. (Credit: NASA)

WASHINGTON, DC (NASA PR) — NASA has selected two finalist concepts for a robotic mission planned to launch in the mid-2020s: a comet sample return mission and a drone-like rotorcraft that would explore potential landing sites on Saturn’s largest moon, Titan.

The agency announced the concepts Wednesday, following an extensive and competitive peer review process. The concepts were chosen from 12 proposals submitted in April under a New Frontiers program announcement of opportunity.

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NASA’s Asteroid-Hunting Spacecraft is a Discovery Machine

PASADENA, Calif. (NASA PR) — NASA’s Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has released its third year of survey data, with the spacecraft discovering 97 previously unknown celestial objects in the last year. Of those, 28 were near-Earth objects, 64 were main belt asteroids and five were comets.

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NASA Receives 12 Proposals for Solar System Exploration Missions


WASHINGTON, DC (NASA PR) — NASA has received and is reviewing 12 proposals for future unmanned solar system exploration. The proposed missions of discovery – submitted under NASA’s New Frontiers program – will undergo scientific and technical review over the next seven months. The goal is to select a mission for flight in about two years, with launch in the mid-2020s.

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