Tag: Mosaic

Ceres’ bright spots come from salty water below

The mysterious bright spots on Ceres caused a sensation when the Dawn spacecraft first spied them in 2015. Now, they’re known to be salt deposits from a recent or ongoing percolation of briny water from a large reservoir in Ceres’ interior. Source: https://earthsky.org/space/bright-areas-dwarf-planet-ceres-salty-water-below…

NASA’s planet Hunter completes its primary mission

On July 4, NASA’s Transiting Exoplanet Survey Satellite (TESS) finished its primary mission, imaging about 75% of the starry sky as part of a two-year-long survey. In capturing this giant mosaic, TESS has found 66 new exoplanets, or worlds beyond our solar system, as well as nearly 2,100 candidates astronomers are working to confirm. Source: https://phys.org/news/2020-08-nasa-planet-hunter-primary-mission.html…

Could ice sheets, not rivers, have formed the channels on Mars?

New research suggests that many of Mars’ ancient channels, thought to have been carved by flowing surface water, were formed instead by meltwater beneath glacial ice sheets. Source: https://earthsky.org/space/mars-river-channels-ice-sheets-devon-island-canadian-arctic-archipelago…

Watch the moon shed its shadow

Because the moon moves eastward (away from the setting sun) at the rate of about 13 degrees per day, watch for the young moon to shed its shadow as it waxes (increases) in age. Source: https://earthsky.org/tonight/watch-the-moon-shed-its-shadow…

This day in 2013: The Day the Earth Smiled

Today is the anniversary of The Day the Earth Smiled, the 3rd-ever image of Earth from the outer solar system, taken by the great Cassini spacecraft on July 19, 2013. Source: https://earthsky.org/space/the-day-earth-smiled-2013-cassini-image-of-earth-moon-planets…

Solar Orbiter’s 1st views of the sun

Solar Orbiter’s new views are the closest images of the sun taken so far. Source: https://earthsky.org/space/solar-orbiters-first-views-of-the-sun…

Video: Flight over Korolev Crater on Mars

This movie was created using an image mosaic made from single orbit observations from the High Resolution Stereo Camera (HRSC) on Mars Express, which was first published in December 2018. The mosaic combines data from the HRSC nadir and colour channels; the nadir channel is aligned perpendicular to the surface of Mars, as if looking straight down at the surface. Source: https://phys.org/news/2020-07-video-flight-korolev-crater-mars.html…

Have you seen Venus and Mercury? Photos here

Venus and Mercury – the 2 worlds orbiting closer to our sun than Earth – have been closest this week for all of 2020. Photos from the EarthSky community here. Source: https://earthsky.org/todays-image/photos-mercury-venus-conjunction-may-2020…

Mercury and Venus pair up May 21 and 22

Depending on where you live worldwide, the planets Mercury and Venus will pair up most closely for the year on May 21 or 22, 2020. Source: https://earthsky.org/tonight/mercury-venus-pair-up-at-dusk-may-21-and-22…