Home / Science (page 20)

Science

Hot electrons are harvested without tricks

A set of ultra-fast spectroscopy used in the study. Credit: Maxim Pchenitchnikov, University of Groningen Semiconductors convert energy from photons (light) into an electron current. However, some photons carry too much energy for the material to be absorbed. These photons produce "hot electrons", and the excess energy from these electrons is converted to heat. Material scientists have been looking for …

Read More »

Almost extreme black holes trying to regrow hair get cold again

An artist's perception of a spinning black hole with the accretion flow and a jet. Credit: NASA / JPL-Caltech Black holes "have no hair": no attributes that can be used to separate them. Extreme black holes (spinning at maximum allowable speed) may have an additional property, permanent hair made from a massless scale field. Almost extreme black holes (like Gargantua, …

Read More »

See China Simulate a Mars Landing for 2020 Mission to Red Planet (Video)

China just tested its brand new facility to simulate Mars landings and marked a major step in the country's planned march to the Red Planet. The facility in northern China's Hebei Province includes a tower nearly 460 feet (140 meters) high, a servo system and a Martian surface simulation area. The highly touted test yesterday (November 14) precedes China launching …

Read More »

North Korean Nuke corresponds to & # 39; 17 Hiroshima's & # 39; according to space-based radar

Satellites such as Sentinel-1 and ALOS-2 have advanced synthetic aperture rows that can provide data for mapping land shifts, land deformation, ice shelves and glaciers, and can be used to assist emergency response in disasters such as floods strike and support humanitarian relief efforts during times of crisis. Credit: ESA / ATG medialab North Korea withdrew from the Nuclear Non-Proliferation …

Read More »

Leonid Meteor Shower 2019 peaks soon: Here's what to expect

It will be a bad year for one of the most famous meteor showers, the Leonids . This year's Leonider, which peaks on Monday morning (Nov. 18), is likely to be a major downer for two reasons. The shower itself is expected to be gentle, and there will be a waning gibbous moon that lights up the native sky. The …

Read More »

Regular staffing launches of SpaceX, Boeing probably won't start until summer 2020, says NASA inspector general inspector

NASA's regular crew launches to the International Space Station on private vehicles built by SpaceX and Boeing is unlikely to begin until summer 2020, warns a new report from the Space Agency's Office of the Inspector General (OIG). The report also criticizes additional NASA payments to Boeing under the program, adding that the Commercial Crew Program (CCP) faces many challenges …

Read More »

Today's Spacewalk will repair an essential Dark Matter experiment

A computer generated image of AMS on ISS Image : NASA / JSC Astronauts Andrew Morgan from NASA and Luca Parmitano from the European Space Agency is outside e from the International Space Station (ISS) as we are talking about. The duo takes a space walk to fix an important experiment in dark matter . You can see (and see …

Read More »