Will you see Saturn and Mercury in the east before sunup these next few mornings? It won’t be easy. They’re near the sunrise. Their quasi-conjunction comes on February 23. Source: https://earthsky.org/tonight/mercury-saturn-quasi-conjunction-feb-23-2021…
Tag: Degrees
James Webb Space Telescope – Hubble’s successor – to launch in October
The James Webb Space Telescope is the world’s most complex infrared telescope, built for a wide range of research projects. NASA is now targeting October 31 for its launch on an Ariane 5 rocket from French Guiana. Source: https://earthsky.org/space/james-webb-telescope-hubble-successor-to-launch…
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…
Moon skims past Mars and Aldebaran February 17-19, 2021
The waxing crescent moon pairs up with the faint planet Uranus on February 17, flits by the red planet Mars on February 18, and then joins up with the red star Aldebaran on February 19. Source: https://earthsky.org/tonight/moon-mars-aldebaran-feb-17-18-19-2021…
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…
Is the Dyatlov Pass incident solved?
The Dyatlov Pass incident has intrigued people for generations, but a new theory pointing to a slab avalanche as the culprit does a thorough job of explaining how the 9 Russian trekkers died. A new video and more here. Source: https://earthsky.org/human-world/dyatlov-pass-incident-mystery-solved-slab-avalanche…
Can you see Canopus, the 2nd-brightest star?
Here’s how to spot Canopus, the 2nd-brightest star in the sky as seen from Earth, on February evenings. Source: https://earthsky.org/brightest-stars/few-know-the-second-brightest-star-canopus…
Has the polar vortex arrived? What is it?
The polar vortex is an enormous, 3-dimensional ring of winds that surrounds the North and South poles during each hemisphere’s winter. The polar vortex influences the jet stream, which can bring cold winter weather to the U.S. and Europe. Source: https://earthsky.org/earth/what-is-the-polar-vortex…
Today in science: A spacecraft obliterated a sundog
On February 11, 2010, a solar observatory launched into space ripped apart a sundog and created a new ice halo that amazed scientists. Source: https://earthsky.org/human-world/video-when-a-spacecraft-destroyed-a-sundog…
Venus-Jupiter conjunction February 11, 2021
Depending on where you live worldwide, the planets Venus and Jupiter will pair up most closely in the morning sky on February 11 or 12, 2021. Source: https://earthsky.org/tonight/venus-jupiter-conjunction-feb-11-2021…