The Mesoamerican Long Count calendar is a non-repeating, vigesimal (base-20) and base-18 calendar used by several Pre-Columbian Mesoamerican cultures, most notably the Maya. Using a modified vigesimal tally, the Long Count calendar identifies a day by counting the number of days passed since...
Explosive crater twins on Mars Dramatic underground explosions, perhaps involving ice, are responsible for the pits inside these two large martian impact craters, imaged by ESA's Mars Express on 4 January. The 'twin' craters are in the Thaumasia Planum region, a large plateau that lies immediat...
Title: Carnegie Supernova Project: Observations of Type IIn Supernovae Authors: F. Taddia, M. D. Stritzinger, J. Sollerman, M. M. Phillips, J. P. Anderson, L. Boldt, A. Campillay, S. Castellón, C. Contreras, G. Folatelli, M. Hamuy, E. Heinrich-Josties, W. Krzeminski, N. Morrell, C. R. Burns, W...
'Flaming tennis ball' slides across South Australian skies Stargazers say a meteor that floated across Adelaide skies overnight looked like a flaming tennis ball before it disappeared from view. The object appeared in the sky about 9:30pm, with people from around Birdwood, Norwood, Mannum and B...
Orbital elements:
2013 GS38 Earth MOID = 0.0677 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 273.49426 (2000.0) P Q
n 0.54131500 Peri. 194.39539 +0.77349030 +0.62706592
a 1.4910859 Node 126.39219 -0.56959335 +0.75153253
e 0.3968407 Incl. 6.57706 -0.27798592 +0.20490777
P 1.82 H 19.7...
Orbital elements:
2013 GU38 Earth MOID = 0.2454 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 313.13715 (2000.0) P Q
n 0.49805540 Peri. 65.81010 +0.02936741 +0.98991982
a 1.5762228 Node 207.00541 -0.99153020 +0.01130650
e 0.2723572 Incl. 17.76584 -0.12651251 +0.14117687
P 1.98 H 20.5...
Abdullah Atalar (born April 11, 1954) is a Turkish scientist and academic. Atalar is the Rector of Bilkent University, and a professor at Department of Electrical and Electronics Engineering. Read more
'Lev Petrovich Bulat, a Russian physicist, was born on April 11, 1947, Chernovtsy, Ukraine. In 1988 he received a D.Sc in Physics and Mathematics, from Leningrad Polytechnical Institute, with the thesis: "Transport Phenomena in Semiconductors under Large Temperature Gradients"....
Macedonio Melloni (11 April 1798 - 11 August 1854) was an Italian physicist, notable for demonstrating that radiant heat has similar physical properties to those of light. Read more
Title: An X-ray study of the supernova remnant G20.0-0.2 and its surroundings Authors: Alberto Petriella, Sergio Paron, Elsa Giacani Aims: We study the supernova remnant G20.0-0.2 and its surroundings in order to look for the high energy counterpart of the radio nebula and to find evidence of int...
The slate deposits of Wales belong to three geological series: Cambrian, Ordovician and Silurian. The Cambrian deposits run south-west from Conwy to near Criccieth; these deposits were quarried in the Penrhyn and Dinorwig quarries and in the Nantlle Valley. There are smaller outcrops elsewher...
Orbital elements:
2013 GT38 Earth MOID = 0.0580 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 344.28678 (2000.0) P Q
n 0.39275525 Peri. 268.35766 -0.35420599 +0.88810337
a 1.8466647 Node 333.88211 -0.33852263 -0.41376563
e 0.7139063 Incl. 41.71515 -0.87174569 -0.20017594
P 2.51 H 19....
Orbital elements:
2013 GW38 Earth MOID = 0.0006 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 14.66585 (2000.0) P Q
n 0.34688324 Peri. 137.23425 -0.90933021 -0.41588604
a 2.0060750 Node 18.20227 +0.37007394 -0.82220734
e 0.5460206 Incl. 2.30162 +0.19016794 -0.38860506
P 2.84 H 28.4 G 0...
Fifth-grader Xu Ruinong of Yuren Elementary in Taizhong was on a natural science museum field trip this past July in Tainan County near Cailiao Creek when he discovered a sparkling stone. Who could have imagined that the stone was none other than a 400,000-year-old tooth from a Taiwan tiger? The boy...
