Tag: Temperature

Dark streaks on Mars may be caused by salts and melting ice

Researchers at the SETI Institute say that unusual dark streaks on sun-facing slopes on Mars, debated about for years, may be small landslides caused by a combination of salts and melting ice just below the surface. Source: https://earthsky.org/space/mars-dark-streaks-melting-ice-recurring-slope-lineae…

A new planet next door?

Astronomers have spotted “something” near Alpha Centauri A, in the star system nearest our Earth and sun. If it turns out to be a planet, it’ll be the first time a planet has been directly imaged within the habitable zone of a star. Source: https://earthsky.org/space/alpha-centauri-a-planet-candidate-direct-image-discovery…

A record deadly week for US avalanches in early February

2021 has brought a deadly avalanche season. “We’re only halfway through the season and we’re 3/4 of the way to the number of fatalities we’d see in a typical year. The dangerous, record-breaking year keeps avalanche forecasters up at night,” one expert said. Source: https://earthsky.org/human-world/avalanches-2021-united-states-how-to-survive…

German Institute Develops ‘Powerpaste’ That Stores Hydrogen Energy At 10x the Density of a Lithium Battery

A German research organization has developed a magnesium-based “Powerpaste” with an energy density ten times more than current battery technology. Hackaday reports: We’ve been promised hydrogen-powered engines for some time now. One downside though is the need for hydrogen vehicles to have heavy high-pressure tanks. While a 700 bar tank and the accompanying fuel cell is acceptable for a city bus…

Large variation in daily temperatures linked to lower economic growth

We already know that large fluctuations in annual temperatures damage economies – now there’s evidence that day-to-day temperature changes are harmful too Source: https://www.newscientist.com/article/2266906-large-variation-in-daily-temperatures-linked-to-lower-economic-growth/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…

See Sirius, the brightest star in the night sky

Find out how to spot Sirius, the brightest star as seen from Earth. Learn the mythology behind this dazzling light and how it earned the nickname of the Dog Star. Source: https://earthsky.org/brightest-stars/sirius-the-brightest-star…

Tomorrow is New Year’s Day on Mars

Mars Year 36 begins on February 7, 2021. If you’re looking for a reason to celebrate, here’s to a Happy New Year … on Mars. Source: https://earthsky.org/astronomy-essentials/mars-calendar-years-began-in-earth-year-1955…

Moon and Antares before dawn February 6

Let the moon show you Antares, the red supergiant star, on the morning of February 6, 2021 Source: https://earthsky.org/tonight/moon-antares-scorpius-feb-before-dawn…

How to see Sirius B

Sirius is a binary star, with a small white dwarf called the Pup orbiting the large primary star. It’s not easy to observe, but it is possible. Here’s how. Source: https://earthsky.org/brightest-stars/how-to-observe-sirius-b…