Results 21 to 30 of about 2,790,834 (259)
Science Advances, 2020 What was the early atmosphere made of? We review what is known during the Archean eon, 4 to 2.5 billion years ago. The atmosphere of the Archean eon—one-third of Earth’s history—is important for understanding the evolution of our planet and Earth-like ...
D. Catling, K. Zahnle
semanticscholar +1 more source
Bombs and Flares at the Surface and Lower Atmosphere of the Sun [PDF]
, 2017 A spectacular manifestation of solar activity is the appearance of transient brightenings in the far wings of the Hα line, known as Ellerman bombs (EBs). Recent observations obtained by the Interface Region Imaging Spectrograph have revealed another type
V. Hansteen +5 more
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The development of lower-atmosphere turbulence early in a solar flare [PDF]
Science Advances, 2018 IRIS observation of the initiation of a solar flare suggests that turbulence helps to heat the Sun’s lower atmosphere. We present the first observational study of the onset and evolution of solar flare turbulence in the lower solar atmosphere on an ...
N. Jeffrey +3 more
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On the orbital variability of Ganymede's atmosphere [PDF]
, 2017 Ganymede's atmosphere is produced by radiative interactions with its surface, sourced by the Sun and the Jovian plasma. The sputtered and thermally desorbed molecules are tracked in our Exospheric Global Model (EGM), a 3-D parallelized collisional model.
F. Leblanc +7 more
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The Absolute Magnitude of the Sun in Several Filters [PDF]
Astrophysical Journal Supplement Series, 2018 This paper presents a table with estimates of the absolute magnitude of the Sun and the conversions from vegamag to the AB and ST systems for several wide-band filters used in ground-based and space-based observatories.
C. Willmer
semanticscholar +1 more source
Ion-atom radiative processes in the solar atmosphere: quiet Sun and sunspots [PDF]
, 2013 In the previous works the significance of the symmetric and non-symmetric ion-atom absorption processes in far UV and EUV regions within a model of the quiet Sun atmosphere, has been studied.
V. Srećković +3 more
semanticscholar +1 more source
A Search for Water in a Super-Earth Atmosphere: High-resolution Optical Spectroscopy of 55Cancri e [PDF]
, 2017 We present the analysis of high-resolution optical spectra of four transits of 55Cnc e, a low-density super-Earth that orbits a nearby Sun-like star in under 18 hr.
Lisa J. Esteves +4 more
semanticscholar +1 more source
We reside in the sun's atmosphere
Biomedicine & Pharmacotherapy, 2005 The Sun is the origin of all activities of the Earth, including its solid, liquid and gas states, as well as life on the Earth surface. Life was created on this planet and was further evolved after long physical/chemical processes, so that life here matches with what this planet requires.
openaire +2 more sources
Hot explosions in the cool atmosphere of the Sun [PDF]
Science, 2014 The solar atmosphere was traditionally represented with a simple one-dimensional model. Over the past few decades, this paradigm shifted for the chromosphere and corona that constitute the outer atmosphere, which is now considered a dynamic structured envelope.
H. Peter +22 more
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ALDOA Promotes Glycolysis and NLRP3/GSDMD Pyroptosis to Accelerate ALS Progression
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Amyotrophic lateral sclerosis (ALS) is characterized by progressive motor neuron degeneration. Glycolytic dysregulation is implicated in disease progression, yet the underlying mechanisms remain unclear. This study investigates how Aldolase A (ALDOA) drives ALS progression through glycolysis‐mediated motor neuron pyroptosis.
Kaixin Yan +9 more
wiley +1 more source