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108 results for Astrophysics

Israel Eyes Next-Gen Satellite Launch to Scrutinize Universe Under New Light
Israel Eyes Next-Gen Satellite Launch to Scrutinize Universe Under New Light

https://www.weizmann-usa.org/news-media/in-the-news/israel-eyes-next-gen-satellite-launch-to-scrutinize-universe-under-new-light/

Aug 12, 2019... The Weizmann Institute of Science and the Israel Space Agency will work together to create a new "micro-satellite," the ULTRASAT, projected to launch in 2023 (Weizmann Institute of Science)
The satellite, known as ULTRASAT and weighing just 160 kilograms (353 pounds), will carry a telescope “designed to observe the Universe as it has not been seen it before,” the institute said in a statement.

TAGS: Astrophysics, Space, Technology

From Rehovot to Jupiter: Weizmann Science in Space
From Rehovot to Jupiter: Weizmann Science in Space

https://www.weizmann-usa.org/news-media/feature-stories/from-rehovot-to-jupiter-weizmann-science-in-space/

Aug 01, 2016... Headed by NASA’s Jet Propulsion Laboratory, Juno’s mission is to “improve our understanding of the solar system’s beginnings by revealing the origin and evolution of Jupiter.” (Learn more at NASA’s Juno website.)
By learning about the mysterious weather on the giant planet – including the massive, ancient storm known as the Great Red Spot – ​and revealing Jupiter’s structure via magnetic and gravitational measurements, the international consortium of scientists hopes to understand how our corner of the universe was formed.

TAGS: Astrophysics, Space, Physics

A Multiple-Impact Origin for the Moon
A Multiple-Impact Origin for the Moon

https://www.weizmann-usa.org/news-media/news-releases/a-multiple-impact-origin-for-the-moon/

Jan 09, 2017... The formation of the Moon has remained something of a puzzle. A leading theory proposes a cataclysmic impact involving a Mars-sized object and a young Earth. But there are some inconsistencies with this scenario. A new study at the Weizmann Institute of Science, based on hundreds of simulations run on a computer cluster, suggests that a more plausible chain of events might involve a number of run-ins with smaller objects. This would have produced smaller moonlets that would have eventually coalesced into the single Moon we have today. The research appeared in Nature Geoscience.

TAGS: Astrophysics, Space, Physics

Israeli Scientist Helps Discover “A Whole New Jupiter”
Israeli Scientist Helps Discover “A Whole New Jupiter”

https://www.weizmann-usa.org/news-media/in-the-news/israeli-scientist-helps-discover-a-whole-new-jupiter/

May 28, 2017... This artist’s concept shows the pole-to-pole orbits of NASA’s Juno spacecraft at Jupiter. Image courtesy of NASA/JPL-Caltech/SwRI
Less than a year into its planned three-year study of the planet Jupiter, NASA’s Juno research spacecraft  already has revealed or confirmed facts that the Juno Science Team – including Yohai Kaspi of Israel’s Weizmann Institute of Science – could only guess at previously.

TAGS: Astrophysics, Space, Technology, Physics

Truly Reaching for the Stars in 2016
Truly Reaching for the Stars in 2016

https://www.weizmann-usa.org/news-media/feature-stories/truly-reaching-for-the-stars-in-2016/

Jan 19, 2016... The Mars rovers. A spacecraft landing on a comet. Space tourism. Even the Star Wars reboot: Thanks to such thrilling events, interest in space may not have been this high since the Space Race. The decades since America’s moon landing have brought outer space closer than ever, thanks to the development of technologies that are transforming the field of astrophysics from one that is largely theoretical to one that is dynamic and happening in real time.

TAGS: Astrophysics, Space

Breaking the Ice in Search of Cosmic Answers
Breaking the Ice in Search of Cosmic Answers

https://www.weizmann-usa.org/news-media/in-the-news/breaking-the-ice-in-search-of-cosmic-answers/

Jun 25, 2012... Hagar Landsman-Peles and flags at the South Pole. Photo by Hagar Landsman-Peles
A year and a half ago, after almost a decade of construction, a unique particle detector known as the IceCube Neutrino Observatory was inaugurated at the South Pole.
Particle detectors are meant to smoke out the smallest units of high energy, and this observatory hosts thousands of small detectors, buried in 86 holes, 1.5 to 2.5 kilometers deep across a square kilometer of Antarctic tundra.

TAGS: Astrophysics, Physics

""Brightest Supernova Ever"" Was Actually Monster Black Hole's Violent Star Slashing
""Brightest Supernova Ever"" Was Actually Monster Black Hole's Violent Star Slashing

https://www.weizmann-usa.org/news-media/in-the-news/brightest-supernova-ever-was-actually-monster-black-hole-s-violent-star-slashing/

Dec 12, 2016... This artist’s illustration depicts a sun-like star being “spaghettified” by a supermassive black hole, which has the mass of 100 million times that of Earth’s sun. A new study found that this death by black hole was the fate of the ultra-bright supernova ASASSN-15lh.Credit: ESA/Hubble, ESO, M. Kornmesser
An incredibly luminous outburst that astronomers had previously classified as possibly the brightest supernova ever actually might have been caused by the explosive death of a star torn apart by a giant black hole, a new study finds.

TAGS: Astrophysics, Space, Physics

Hints of Earth Splash a Saturnian Moon Landscape
Hints of Earth Splash a Saturnian Moon Landscape

https://www.weizmann-usa.org/news-media/in-the-news/hints-of-earth-splash-a-saturnian-moon-landscape/

Jul 26, 2010... The lakes of southern Titan are shrinking.The level of Ontario Lacus, the largest lake in the southern hemisphere of this Saturnian moon, has fallen by some 15 feet over the last four years, causing its shore to recede by as much as 6 miles in some places. Other lakes nearby have similarly receded, according to radar measurements made by the Cassini spacecraft.However, if prolonged spells of 90-degree temperatures have you yearning for a refreshing icy dip, there are still plenty of bathing opportunities on Titan.Of course the lakes there are made of liquid methane — and the 90 degrees of temperature are on the Kelvin scale, near enough to absolute zero to challenge even the most cosmically adept polar bear. The atmosphere is nitrogen and methane.Titan is the only body in the solar system other than Earth that has been found to harbor liquid on its surface, leading many planetary scientists and aspiring astrobiologists to speculate that the same organic chemical processes that led to life on Earth are occurring in a frozen slush of hydrocarbons on Titan.The discovery that Titan’s lakes are evaporating, at least in the Southern Hemisphere, where summer just ended, suggests that there are active weather and geological cycles on Titan analogous to those on Earth. But on Titan the liquid driving those cycles is not water but methane, explained Oded Aharonson, a planetary scientist at the California Institute of Technology. [Aharonson is now a professor in the Weizmann Institute of Science’s Department of Environmental Sciences and Energy Research.]

TAGS: Astrophysics, Space, Earth, Physics

Are Mars’ Trojan Asteroids Pieces of the Red Planet?
Are Mars’ Trojan Asteroids Pieces of the Red Planet?

https://www.weizmann-usa.org/news-media/in-the-news/are-mars-trojan-asteroids-pieces-of-the-red-planet/

Jul 24, 2017... A mosaic of the Valles Marineris hemisphere of Mars. This view is similar to what one would see from a spacecraft, according to NASA.The Trojan asteroids that follow Mars in its orbit might have come from the planet itself, blown off in an ancient impact rather than being late arrivals, a new study suggests. Several planets in Earth’s solar system have Trojan asteroids — bodies that run ahead of or behind the planet. Jupiter, for example, has thousands. Earth has at least one, discovered in 2010. Uranus, Neptune and Venus also have them. Trojan asteroids are so called because the first ones to be discovered were named for figures from the Trojan War, including Achilles and Agamemnon. NASA plans to launch a mission in 2021, called Lucy, to study six of Jupiter's Trojan asteroids.David Polishook, a researcher at the Weizmann Institute in Israel and lead author on the new study, posits that the Trojans following Mars were blasted off the surface of the young planet at least a billion years ago, and settled into their current positions soon after that.Trojans orbit at Lagrange points, regions of gravitational stability numbered 1 through 5, where an object that is a small fraction of the mass of a planet and the sun, such as an asteroid, will maintain its position. Around Mars, for example, Lagrange point No. 1 (or L1) is on an imaginary line connecting Mars and the sun, while L2 is directly behind the planet if one extends that same line. Extend the line through the sun so that it touches the point in Mars’ orbit exactly opposite the planet to reach L3. L4 and L5 are at points 60 degrees ahead and behind Mars along its orbit. (If you draw lines between L4, L5, Mars and the sun, you get two equilateral triangles.) Mars’ Trojan asteroids are at L4 and L5. Mars has nine Trojan asteroids, the study notes. One, called 1999 UJ7, runs ahead of the planet at the L4 position. Three others, 5261 Eureka, 2001 DH47 and 2007 NS2, travel behind at L5. Astronomers had already studied the reflected light from Eureka and noted that the object was rich in the mineral olivine. The new study shows that 2001 DH47 and 2007 NS2 also are rich in olivine. Olivine is rare in asteroids, but it is common in larger bodies — and occurs on Mars in impact basins.

TAGS: Astrophysics, Space

Scientists Find Signs of Missing "God Particle"
Scientists Find Signs of Missing "God Particle"

https://www.weizmann-usa.org/news-media/in-the-news/scientists-find-signs-of-missing-god-particle/

Dec 14, 2011... Weizmann Institute of Science astrophysicists have been prominent inthe experiments that have shown "promising signs" of the existence ofthe Higgs boson – the "God particle" – that provides a framework for allof the subatomic particles in nature and has been sought for decades.
Scientists at the Large Hadron Collider (LHC) and the CERN researchcenter in Switzerland said in an excited announcement on Tuesday that itfound some evidence in its experiments of the existence of theelementary particle.

TAGS: Astrophysics, Space, Physics

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