Science

Astronomers Discover Three Earth-Like Planets

Extrasolar planets are being discovered by the hundreds, but are any of these newfound worlds really like Earth? A planetary system recently discovered by the Kepler spacecraft will help resolve this question. The system of three planets, each just larger than Earth, orbits a nearby star called EPIC 201367065. The three planets are 1.5-2 times the size of Earth, and the outermost planet orbits on the edge of the so-called “habitable zone,” where the temperature may be just right for liquid water, believed necessary to support life, on the planet’s surface. “We’ve learned in the past year that planets the size and temperature of Earth are common in our Milky Way galaxy,” explains University of Hawaii astronomer Andrew Howard. “We also discovered some Earth-size planets that appear to be made of the same materials as our Earth, mostly rock and iron.” [...]

Thirty Meter Telescope groundbreaking set

A groundbreaking and blessing ceremony for the next-generation Thirty Meter Telescope (TMT) will be held on Tuesday, Oct. 7, 2014, launching a multi-national $1.4 billion project near the summit of Mauna Kea, Hawaii. Although access to the TMT construction site will be limited due to the area’s sensitive environment and harsh physical conditions, the ceremony will be fully accessible via a live-stream webcast. George Takei, noted actor, director and author, known for his role in the television series Star Trek, will present pre-recorded science segments during the live webcast. Dr. Robert Hurt, researcher, science podcaster and lecturer, will host the webcast. [...]

Latest crew set for 8-month simulated Mars mission

The six astronaut-like crew members of the next Hawai‘i Space Exploration Analog and Simulation (HI-SEAS) mission starting October 15 will be isolated in their dome habitat for eight months. This mission is twice as long as any previously completed at the Hawaiʻi site, and second only to Russia’s Mars500 experiment in total duration. Also, for the first time, HI-SEAS will have a female commander. In NASA history, only two women have ever commanded the spaceship: astronauts Eileen Collins in July 1999, and Pamela Melroy in November 2007. For true space flight, the commander role requires previous astronaut experience as well as at least 1,000 hours experience piloting a jet aircraft. For HI-SEAS, Commander Martha Lenio was selected based on feedback from fellow crew members and from instructors of the National Outdoor Leadership Skills course that both NASA and HI-SEAS require of their teams in training. [...]

Microbes touted as key to future agriculture

A local technology commercialization company is working with two mainland biotechnology firms to encourage the adoption of microbial treatments to boost agricultural productivity while reducing water consumption as well as cutting the use of fertilizers and pesticides. “Everything we’ve been taught about farming is incorrect,” declares Vincent Kimura, president of Inovi Green. “Historical and current agricultural processes of crop fertilization and soil tilling are falling out of favor, damaging ecosystems and producing diminishing returns. Environmentally-friendly microbial treatments have evolved to do this work far more effectively.” [...]

Hawaii scientist maps, names ‘Laniakea’ galaxy cluster

An international team of astronomers has defined the contours of the immense supercluster of galaxies containing our own Milky Way. They have named the supercluster “Laniakea,” meaning “immense heaven” in Hawaiian. The team was led by University of Hawaii at Manoa astronomer R. Brent Tully, who recently shared the 2014 Gruber Cosmology Prize and the 2014 Victor Ambartsumian International Prize. The paper explaining this work is the cover story of the September 4 issue of the prestigious journal Nature. [...]

Three UH scientists selected for Mars rover teams

NASA has announced the selection of seven science instruments to be included on the Mars 2020 rover. Three scientists from the University of Hawaii at Mānoa School of Ocean and Earth Science and Technology (SOEST) — Sarah Fagents, Shiv Sharma and Anupam Misra — will be members on the instrument teams to conduct unprecedented science and exploration technology investigations on the Red Planet. The new rover will carry sophisticated hardware and instruments to perform geological assessments of the rover’s landing site, determine the potential habitability of the environment, and directly search for signs of ancient Martian life. [...]

How do volcanoes affect the weather and climate?

Topography indisputably influences the weather—that’s why precipitation is so much greater on the windward side of the island. But how much did Hawai‘i’s topography influence Iselle? Hurricane Iselle weakened to a tropical storm just as it reached the island, but still managed to make landfall. As it did, the bulk of the storm stalled on the east flank of Mauna Loa, but its weakened upper parts continued moving westward. [...]

Third historic volcano found off O‘ahu

University of Hawaii researchers, working with colleagues in California and France, have discovered evidence of a third major shield volcano making up the island of O‘ahu. Previously, geologists believed the island’s current profile is the remnants of two volcanoes, Wai‘anae and Ko‘olau. But extending almost 100 km WNW from Ka‘ena Point, the western tip of the island of O‘ahu, is a large region of shallow bathymetry, called the submarine Ka‘ena Ridge. It is that region that has now been recognized to represent a precursor volcano to the island of O‘ahu, and on whose flanks the Wai‘anae and Ko‘olau Volcanoes later formed. The team included scientists from the University of Hawai‘i–Mānoa, Laboratoire des Sciences du Climat et de L’Environment in France, and Monterey Bay Aquarium Research Institute. [...]

Leaf Doctor: UH plant expert launches third app

Fresh from his success with two widely utilized smartphone apps, plant pathologist Scot Nelson has created a new and more technical app, the Leaf Doctor, for a more specialized audience. Nelson, who works at the College of Tropical Agriculture and Human Resources at the University of Hawaii, doesn’t anticipate that the Leaf Doctor will have the same broad, popular appeal as his Plant Doctor app. For many of those who will use the Leaf Doctor, though, it is likely to be a professional game-changer. The Leaf Doctor focuses on the finer points of diagnosing plant diseases. [...]

Deep origins to the behavior of our volcanoes

Kīlauea volcano, on the Big Island of Hawaii, typically has effusive eruptions, where magma flows to create ropy pāhoehoe lava. But Kīlauea sometimes erupts more violently, showering scoria and blocks over much of the surface of the island. To explain the variability in Kīlauea’s eruption styles, a research team analyzed 25 eruptions that have taken place over the past 600 years. Their research shows that the ultimate fate of a magma at Kīlauea — that is if the eruption will be effusive or explosive — is strongly influenced by the variability in composition of the deep magma. In short, more gas-rich magmas produces more explosive eruptions. “Gas-rich magmas are ‘predisposed’ to rise quickly through the Earth’s mantle and crust and erupt powerfully,” Houghton explained. [...]