Despite Pluto’s demotion to dwarf planet status,people are still attached to it.Scientists combined observations of Pluto from NASA’s New Horizons probe with observations of comet Churyumov-Gerasimenko from the Euro...Despite Pluto’s demotion to dwarf planet status,people are still attached to it.Scientists combined observations of Pluto from NASA’s New Horizons probe with observations of comet Churyumov-Gerasimenko from the European Space Agency’s Rosetta probe and found that Pluto’s nitrogen abundance matched the pattern of about a billion comets,which led to the theory that Pluto is made of about a billion comets.Yet they don’t know exactly when or where these comets originated.By studying the origin and orbit of comets,the author of this paper found that the material that condensed Pluto was mainly comets and dust ejected by Neptune,and the Kuiper Belt objects were condensed by material ejected by Neptune toward the outer side of its orbit.展开更多
Molar mass μmin of the lightest gas, which will exist "forever" in the atmosphere at the planet surface,can be evaluated by Jeans rule. The μmin of Pluto is 17.3 g@ mol-1. It is evident that both N2 and CO...Molar mass μmin of the lightest gas, which will exist "forever" in the atmosphere at the planet surface,can be evaluated by Jeans rule. The μmin of Pluto is 17.3 g@ mol-1. It is evident that both N2 and CO can be major atmospheric composition at the Pluto surface, and will exist "forever". CH4 can only be escaping slowly from Pluto atmosphere, and still holds quite a proportion in current Pluto atmosphere. However, it will not escape from Titan (or Jupiter, Saturn) atmosphere largely, and will exist "forever". Given the quantitylevelof partial pressure of CH4 in Pluto and Titan (or Jupiter, Saturn) original atmosphere is the same, it will be clear that the current partial pressure of CH4 in Pluto surface atmosphere is 10-3 Pa.展开更多
The aim is to examine the creative queer spaces of Daniel Nolasco’s short films Uranus,Neptune,and Pluto.The main argument indicates that the trilogy unveils geographic landscapes that are not common to current imagi...The aim is to examine the creative queer spaces of Daniel Nolasco’s short films Uranus,Neptune,and Pluto.The main argument indicates that the trilogy unveils geographic landscapes that are not common to current imagination of a typical Brazilian heteronormative space,built by the contrast between the beaches and forests and the density of the city.In the three films,Nolasco explores the deviations from any heteronormative norm in creative queer spaces where alternative experiences and sensibilities of the male homoerotic body are possible.展开更多
It is always hard for a small fish to live in a big pond.Pluto’s recent departure from the classical planet family clearly proves that size really matters.
"The Merchant's Tale" is one of the most intriguing tales in Medieval literary canon The Canterbury Tales. In this tale,Chaucer created the Pluto-Proserpina episode which alludes to the biblical story of..."The Merchant's Tale" is one of the most intriguing tales in Medieval literary canon The Canterbury Tales. In this tale,Chaucer created the Pluto-Proserpina episode which alludes to the biblical story of God expelling Adam and Eve. Previous studies of the episode mainly focus on historical and mythological background of two pagan gods with some focusing on narrative function of the episode. Nevertheless, when examined through the lens of gender studies, Pluto and Proserpina are in effect fabricated as a substitution of God, revealing His androgyny. This article aims to analyze similarities and differences between PlutoProserpina episode, examine God's images in Holy Bible and Medieval society, and finally conclude that the modified God created by Chaucer in the Pluto-Proserpine episode unveils androgyny of God, which is a great challenge to Medieval ideology concerning God's gender.展开更多
2018年8月12日,美国国家航空航天局(NASA)用德尔他-4H(Delta-4H)运载火箭从卡纳维拉尔角空军基地成功发射了“帕克太阳探测器”(Parker Solar Probe)。该探测器是首个飞进太阳日冕进行探测的航天器,其科学目的是研究日冕和太阳风,并对...2018年8月12日,美国国家航空航天局(NASA)用德尔他-4H(Delta-4H)运载火箭从卡纳维拉尔角空军基地成功发射了“帕克太阳探测器”(Parker Solar Probe)。该探测器是首个飞进太阳日冕进行探测的航天器,其科学目的是研究日冕和太阳风,并对可能影响人类日常生活的空间天气进行预警。早在1958年,美国国家科学院的辛普森委员会(Simpson Committee)就提出一项旨在探测近太阳粒子和场环境的任务。到了21世纪90年代,NASA规划了“外行星/太阳探测器”(OPSP)计划,该计划最初包括3项任务,即“太阳探测器”(Solar Probe)、“冥王星柯伊伯快车”(Pluto Kuiper Express)和“木卫二轨道器”(Europa Orbiter)。展开更多
文摘Despite Pluto’s demotion to dwarf planet status,people are still attached to it.Scientists combined observations of Pluto from NASA’s New Horizons probe with observations of comet Churyumov-Gerasimenko from the European Space Agency’s Rosetta probe and found that Pluto’s nitrogen abundance matched the pattern of about a billion comets,which led to the theory that Pluto is made of about a billion comets.Yet they don’t know exactly when or where these comets originated.By studying the origin and orbit of comets,the author of this paper found that the material that condensed Pluto was mainly comets and dust ejected by Neptune,and the Kuiper Belt objects were condensed by material ejected by Neptune toward the outer side of its orbit.
文摘Molar mass μmin of the lightest gas, which will exist "forever" in the atmosphere at the planet surface,can be evaluated by Jeans rule. The μmin of Pluto is 17.3 g@ mol-1. It is evident that both N2 and CO can be major atmospheric composition at the Pluto surface, and will exist "forever". CH4 can only be escaping slowly from Pluto atmosphere, and still holds quite a proportion in current Pluto atmosphere. However, it will not escape from Titan (or Jupiter, Saturn) atmosphere largely, and will exist "forever". Given the quantitylevelof partial pressure of CH4 in Pluto and Titan (or Jupiter, Saturn) original atmosphere is the same, it will be clear that the current partial pressure of CH4 in Pluto surface atmosphere is 10-3 Pa.
文摘The aim is to examine the creative queer spaces of Daniel Nolasco’s short films Uranus,Neptune,and Pluto.The main argument indicates that the trilogy unveils geographic landscapes that are not common to current imagination of a typical Brazilian heteronormative space,built by the contrast between the beaches and forests and the density of the city.In the three films,Nolasco explores the deviations from any heteronormative norm in creative queer spaces where alternative experiences and sensibilities of the male homoerotic body are possible.
文摘It is always hard for a small fish to live in a big pond.Pluto’s recent departure from the classical planet family clearly proves that size really matters.
文摘"The Merchant's Tale" is one of the most intriguing tales in Medieval literary canon The Canterbury Tales. In this tale,Chaucer created the Pluto-Proserpina episode which alludes to the biblical story of God expelling Adam and Eve. Previous studies of the episode mainly focus on historical and mythological background of two pagan gods with some focusing on narrative function of the episode. Nevertheless, when examined through the lens of gender studies, Pluto and Proserpina are in effect fabricated as a substitution of God, revealing His androgyny. This article aims to analyze similarities and differences between PlutoProserpina episode, examine God's images in Holy Bible and Medieval society, and finally conclude that the modified God created by Chaucer in the Pluto-Proserpine episode unveils androgyny of God, which is a great challenge to Medieval ideology concerning God's gender.
