Recent content by rod

A recent past report is similar here. Unlocking cosmic origins: Researchers trace 70% of meteorites to 3 asteroid families, https://phys.org/news/2024-10-cosmic-meteorites-asteroid-families.html My note, beside the long age and recent break up time model interpretations, most of the meteorites...

Interesting report. I note this about z = 14.0 using cosmology calculator. My note, z = 14.0 using cosmology calculators show "It is now 13.722 Gyr since the Big Bang. The age at redshift z was 0.300 Gyr. The light travel time was 13.422 Gyr. The comoving radial distance, which goes into...

Space.com report stated, "New research from scientists with the Chinese Academy of Geological Sciences and published in the journal Science found that sample analysis backs up an established model of the moon as a global liquid magma ocean in the early days after its formation and likely lasted...

My note, a series of fortuitous events in nature must unfold for the giant impact model to be plausible and this report points to some. Example, "With an impact velocity of somewhere around 20,000 mph (32,000 km/h) — relatively slow as impacts go — what happened next was nothing short of...

Helio, the 104 arcminute or so angular size for Earth as seen from the Moon is accurate. However I see this answer as a better explanation from Sky & Telescope report. FYI. "Mike Howard March 15, 2025 at 5:59 pm Total Solar Eclipse—from the Moon. Several news agencies are reporting an...

Helio, you have captured images of Mare Crisium during the total lunar eclipse, I was observing that area too when viewing with my telescope. Blue Ghost lander was in Mare Crisium taking pictures of Earth blocking out the Sun, a total solar eclipse as viewed from the Moon...

Outstanding job Helio! I posted some geeky notes here, https://skyandtelescope.org/astronomy-news/catch-a-spectacular-total-lunar-eclipse-on-march-13-14/, I had difficulty with low level clouds while viewing.

Helio et al. Barnard's star now has 4 small exoplanets confirmed :) https://skyandtelescope.org/astronomy-news/confirmed-at-last-barnards-star-hosts-four-tiny-planets/ https://phys.org/news/2025-03-tiny-planets-orbiting-nearest-stars.html

Glad to see some more reporting on K2-18b. Here are some past reports attempting to sort out if the exoplanet has life on it or not :) Webb discovers methane, carbon dioxide in atmosphere of K2-18 b, https://phys.org/news/2023-09-webb-methane-carbon-dioxide-atmosphere.html Exoplanet's surface...

The exoplanet sites, I am still waiting for life to be confirmed on any of them. NASA or exoplanet.eu sites. https://exoplanetarchive.ipac.caltech.edu/index.html, https://exoplanet.eu/home/ Looking at the exoplanet masses at .eu site, 104 are 2 or less earth masses. Example, AU Mic, all 7 of...

"Many of the extraordinary features of WASP-121 b arise from the fact that it is an ultra-hot Jupiter, a gas giant planet with around 1.2 times the mass of its solar system namesake. WASP-121 b actually orbits so close to its star that a year there lasts just 30 Earth hours." Another report I...

"In this case, the team detected a microlensing signal that indicated two cosmic objects. They determined one of these lensing bodies has a mass around 2,300 times greater than its companion, but weren't able to determine the exact masses of the objects because they were simply too far away."...

Interesting mass reported for Gaia 4b and 5b. The exoplanet.eu site shows 7413 confirmed exos. Mean Jupiter mass is 12.44 Mjup, and max is 74.6 Mjup listed. 4452 exoplanets show mass Mjup property. The NASA archive site, https://exoplanetarchive.ipac.caltech.edu/index.html has some interesting...

https://exoplanetarchive.ipac.caltech.edu/overview/HD%2020794%20d#planet_HD-20794-d_collapsible I do not see radius reported. 6.6 earth mass exoplanet with 2.0 earth radii, mean density 4.53 g cm^-3. Surface gravity compared to Earth would be about 1.65 earth g. It likely has a dense...

I enjoyed this celestial show last night. Out with my 90-mm refractor telescope using TeleVue 14-mm Delos and 10x50 binoculars. 2015-2240 EST, snow and ice all around too with Full Moon light everywhere, quite lovely sight. At 71x, some of the photos in the report look very similar to my...