Results 11 to 20 of about 281,101 (262)

The Transit of Venus [PDF]

open access: bronzeNature, 1875
AMONG the brief telegraphic accounts given in NATURE, vol xi. p. 122, of the work done by the several Transit expeditions, is one from Janssen, in which it is stated that Venus was seen over the sun's corona before contact (which contact, external or internal, is unfortunately not mentioned).

openalex   +5 more sources

Recent investigations of the near-Mars space environment by the planetary aeronomy and space physics community in China

open access: yesEarth and Planetary Physics, 2020
The present issue of Earth and Planetary Physics is dedicated to the near-space neutral and plasma environments of Mars. The issue includes nine papers that present new results on the properties of the Martian exosphere, ionosphere, and magnetosphere ...
Jun Cui   +3 more
doaj   +1 more source

New Measurements of Venus Winds with Ground-Based Doppler Velocimetry at CFHT [PDF]

open access: yes, 1996
operations with observations from the ground using various techniques and spectral domains (Lellouch and Witasse, 2008). We present an analysis of Venus Doppler winds at cloud tops based on observations made at the Canada France Hawaii 3.6-m telescope ...
Allan, JF   +5 more
core   +2 more sources

Pasture management, grazing, and fire interact to determine wetland provisioning in a subtropical agroecosystem

open access: yesEcosphere, 2020
Wetlands in agroecosystems provide multiple ecosystem services, including provisioning services such as forage production. Here, we examine how pasture management intensity (semi‐natural pastures vs.
Grégory Sonnier   +5 more
doaj   +1 more source

Venus: A planetary window into early Earth

open access: yes地球与行星物理论评, 2022
Venus is the most similar planet to the Earth in the solar system in terms of planet size, mass and orbital velocity. Since the early 1960s, Venus has been an important target for human deep space exploration.
Le Chen, Shao-Bing Zhang, Jin-Fei Yu
doaj   +1 more source

Newly found Mayan records of astronomical phenomena in Dresden Codex [PDF]

open access: yesSerbian Astronomical Journal, 2023
The rich culture of old Maya gave birth to a very complicated and complex calendar; they also recorded important historical events and many significant astronomical phenomena.
Vondrák J., Böhm V., Böhm B.
doaj   +1 more source

The Habitability of Venus

open access: yesSpace Science Reviews, 2023
AbstractVenus today is inhospitable at the surface, its average temperature of 750 K being incompatible to the existence of life as we know it. However, the potential for past surface habitability and upper atmosphere (cloud) habitability at the present day is hotly debated, as the ongoing discussion regarding a possible phosphine signature coming from
Westall, F.   +8 more
openaire   +4 more sources

Resurfacing on Venus [PDF]

open access: yesPlanetary and Space Science, 2010
The resurfacing evolution of Venus has beene valuated through Monte Carlo simulations. Forthefirst time, the size sof volcanic flows in the models were generated using the frequency–size distribution of volcanic units measured on Venus. Anon-homogeneous spatial generation of volcanic units was included in the models reproducing the ...
Romeo Briones, Ignacio   +1 more
openaire   +3 more sources

Review of Venusian and Martian ionospheres

open access: yes地球与行星物理论评, 2021
The launch of Tianwen 1 marks the brand-new stage of the deep space exploration of China, which calls for the foundation of planetary science education in China. In planetary science, the ionosphere is considered to be the region of an atmosphere where a
Yutian Cao   +3 more
doaj   +1 more source

Seeding the Solar System with Life: Mars, Venus, Earth, Moon, Protoplanets

open access: yesOpen Astronomy, 2020
In the space of the entire universe, the only conclusive evidence of life, is found on Earth. Although the ultimate source of all life is unknown, many investigators believe Earth, Mars, and Venus may have been seeded with life when these planets, and ...
Joseph Rhawn G.   +3 more
doaj   +1 more source

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