Ostatnie wiadomości

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Polski program kosmiczny / Odp: Polski przemysł kosmiczny - aktualności
« Ostatnia wiadomość wysłana przez Orionid dnia Dzisiaj o 08:17 »
Pete Worden w Toruniu

12 lutego 2017 w Toruniu gościł Simon “Pete” Worden, dyrektor Fundacji Breakthrough, przyznającej nagrody naukowe w kategoriach fizyki, matematyki i biologii. W radzie fundacji zasiadają między innymi Stephen Hawking, Jurij Milner oraz Mark Zuckerberg.

Dr Worden jest także byłym dyrektorem NASA Ames Research Center w Dolinie Krzemowej, doradcą rządu Wielkiego Księstwa Luksemburga w dziedzinie górnictwa kosmicznego i wielkim zwolennikiem prywatnych inicjatyw w kosmosie. Dr Worden przybył do Torunia na zaproszenie ABM Space, lidera konsorcjum górnictwa kosmicznego EX-PL, które skupia także inne toruńskie i bydgoskie firmy kosmiczne: Cilium Engineering, Sybilla Technologies (skupione wokół toruńskiego Business Linku Fundacji Akademickie Inkubatory Przedsiębiorczości), PIAP Space (oddział państwowego instytutu robotyki PIAP) i warszawski Creotech Instruments S.A. Przedstawiciele EX-PL przeprowadzili rozmowy dotyczące szeregu inicjatyw Fundacji Breakthrough. W spotkaniach uczestniczyła także łódzka firma Amepox Microelectronics, która wspólnie z ABM Space wygrała nagrodę Airbus-Merck Sustainable Exploration Prize w konkursie Space Exploration Masters 2017 – za technologię żagla słonecznego „Golden Fleece”. (...)

Ziemia - bezzałogowe / Odp: Start Falcon-9 z Paz i 2x MicroSat 2 (21.02.2018)
« Ostatnia wiadomość wysłana przez Orionid dnia Dzisiaj o 08:13 »
SpaceX@SpaceX 12 godzin temu

Team at Vandenberg is taking additional time to perform final checkouts of upgraded fairing. Payload and vehicle remain healthy. Due to mission requirements, now targeting February 21 launch of PAZ.
Sprawy Ogólne / Odp: Starty rakiet (I kwartał 2018 roku)
« Ostatnia wiadomość wysłana przez Orionid dnia Dzisiaj o 08:10 »
Photos: Russian cargo freighter blasts off from snow-covered launch pad
February 16, 2018 Stephen Clark

Ziemia - bezzałogowe / Odp: Start Falcon-9 z Paz i 2x MicroSat 2 (21.02.2018)
« Ostatnia wiadomość wysłana przez Orionid dnia Dzisiaj o 07:53 »
Prezentacja hiszpańskiego  radarowego satelity zwiadowczego PAZ

<a href="http://www.youtube.com/watch?v=WSflTFvvfe4" target="_blank">http://www.youtube.com/watch?v=WSflTFvvfe4</a>
Ziemia - bezzałogowe / Odp: Ziemia (zbiorczo)
« Ostatnia wiadomość wysłana przez Orionid dnia Dzisiaj o 06:50 »
Misje satelitarne  jak m . in. TOPEX / Poseidon, Jason-1, Jason-2 oraz Jason-3 i GRACE szczegółowo określają przyspieszenie podnoszenia się poziomu mórz i oceanów.
Nie jest to stały poziom 3 mm/rok, ale z każdym rokiem coraz większy.

New Study Finds Sea Level Rise Accelerating
Feb. 13, 2018 By Katie Weeman Cooperative Institute for Research in Environmental Sciences

Global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA and European satellite data.

<a href="http://www.youtube.com/watch?v=VYnReLNLAZ0" target="_blank">http://www.youtube.com/watch?v=VYnReLNLAZ0</a>
Global sea level rise is accelerating incrementally over time rather than increasing at a steady rate, as previously thought, according to a new study based on 25 years of NASA and European satellite data.
Credits: NASA's Goddard Space Flight Center/Kathryn Mersmann

This acceleration, driven mainly by increased melting in Greenland and Antarctica, has the potential to double the total sea level rise projected by 2100 when compared to projections that assume a constant rate of sea level rise, according to lead author Steve Nerem. Nerem is a professor of Aerospace Engineering Sciences at the University of Colorado Boulder, a fellow at Colorado's Cooperative Institute for Research in Environmental Sciences (CIRES), and a member of NASA's Sea Level Change team.

If the rate of ocean rise continues to change at this pace, sea level will rise 26 inches (65 centimeters) by 2100 -- enough to cause significant problems for coastal cities, according to the new assessment by Nerem and colleagues from NASA's Goddard Space Flight Center in Greenbelt, Maryland; CU Boulder; the University of South Florida in Tampa; and Old Dominion University in Norfolk, Virginia. The team, driven to understand and better predict Earth’s response to a warming world, published their work Feb. 12 in the journal Proceedings of the National Academy of Sciences.

"This is almost certainly a conservative estimate," Nerem said. "Our extrapolation assumes that sea level continues to change in the future as it has over the last 25 years. Given the large changes we are seeing in the ice sheets today, that's not likely."

Rising concentrations of greenhouse gases in Earth’s atmosphere increase the temperature of air and water, which causes sea level to rise in two ways. First, warmer water expands, and this "thermal expansion" of the ocean has contributed about half of the 2.8 inches (7 centimeters) of global mean sea level rise we've seen over the last 25 years, Nerem said. Second, melting land ice flows into the ocean, also increasing sea level across the globe.

These increases were measured using satellite altimeter measurements since 1992, including the Topex/Poseidon, Jason-1, Jason-2 and Jason-3 satellite missions, which have been jointly managed by multiple agencies, including NASA, Centre national d’etudes spatiales (CNES), European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), and the National Oceanic and Atmospheric Administration (NOAA). NASA’s Jet Propulsion Laboratory in Pasadena, California, manages the U.S. portion of these missions for NASA’s Science Mission Directorate. The rate of sea level rise in the satellite era has risen from about 0.1 inch (2.5 millimeters) per year in the 1990s to about 0.13 inches (3.4 millimeters) per year today.

"The Topex/Poseidon/Jason altimetry missions have been essentially providing the equivalent of a global network of nearly half a million accurate tide gauges, providing sea surface height information every 10 days for over 25 years," said Brian Beckley, of NASA Goddard, second author on the new paper and lead of a team that processes altimetry observations into a global sea level data record. "As this climate data record approaches three decades, the fingerprints of Greenland and Antarctic land-based ice loss are now being revealed in the global and regional mean sea level estimates."

Even with a 25-year data record, detecting acceleration is challenging. Episodes like volcanic eruptions can create variability: the eruption of Mount Pinatubo in 1991 decreased global mean sea level just before the Topex/Poseidon satellite launch, for example. In addition, global sea level can fluctuate due to climate patterns such as El Niños and La Niñas (the opposing phases of the El Niño-Southern Oscillation), which influence ocean temperature and global precipitation patterns.

Nerem and his team used climate models to account for the volcanic effects and other datasets to determine the El Niño/La Niña effects, ultimately uncovering the underlying rate and acceleration of sea level rise over the last quarter century.

The team also used tide gauge data to assess potential errors in the altimeter estimate.

“The tide gauge measurements are essential for determining the uncertainty in the global mean sea level acceleration estimate,” said co-author Gary Mitchum, University of South Florida College of Marine Science. “They provide the only assessments of the satellite instruments from the ground.” Others have used tide gauge data to measure sea level acceleration, but scientists have struggled to pull out other important details from tide-gauge data, such as changes in the last couple of decades due to more active ice sheet melt.

In addition to NASA's involvement in missions that make direct sea level observations from space, the agency's Earth science work includes a wide-ranging portfolio of missions, field campaigns and research that contributes to improved understanding of how global sea level is changing. Airborne campaigns such as Operation IceBridge and Oceans Melting Greenland gather measurements of ice sheets and glaciers, while computer modeling research improves our understanding of how Antarctica and Greenland will respond in a warming climate.

In 2018, NASA will launch two new satellite missions that will be critical to improving future sea level projections: the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, a partnership with GeoForschungsZentrum (GFZ) in Germany, will continue measurements of the mass of the Greenland and Antarctic ice sheets; while the Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) will make highly accurate observations of the elevation of ice sheets and glaciers.

Sprawy Ogólne / Odp: Starty rakiet (I kwartał 2018 roku)
« Ostatnia wiadomość wysłana przez astropl dnia Dzisiaj o 06:18 »


08    01:00             Canaveral 40     Falcon-9R             USA-280 (Zuma)
09    03:24:33          Taiyuan 9        CZ-2D                 GaoJing-3, 4
11    23:18             Xichang 2        CZ-3B/YZ-1            Beidou-3M7, 3M8
12    03:59             Sriharikota F    PSLV-XL               Cartosat-2F, Telesat Phase-1 LEO, POC-1,
                                                               PICSAT, CANYVAL-X, CNUSAIL-1, KAUSAT-5,
                                                               SIGMA, STEP CUBE LAB, CBNT-2, Flock-3P’ x 4,
                                                               LEMUR x 4, DemoSat-2, Micromas-2, Tyvak-61C,
                                                               SpaceBEE x 4, Fox-1D, Corvus BC3, Arkyd-6,
                                                               CICERO-7, Microsat, INS-1C
12    22:11             Vandenberg 6     Delta-4M+ (5,2)       USA-281 (NRO L-47, Topaz-5)
13    07:10             Jiuquan 43/603   CZ-2D                 LKW-3
17    21:06:11          Kagoshima M      Epsilon 2             ASNARO
19    04:12             Jiuquan          CZ-11                 Jilin 1-07, Jilin 1-08, Zhou Enlai, KIPP-1,
                                                               Xiaoxiang-2, Quantutong-1
20    00:48:00          Canaveral 41     Atlas-5/401           USA-282=SBIRS-GEO-4
21    01:43             Onenui 1         Electron              Flock 0F1C x 2, Lemur-2 x1, x2, Humanity Star
25    05:39:05          Xichang 3        CZ-2C                 Yaogan-30-04 x 3, Weina-1A
25    22:20             Kourou 3         Ariane-5ECA           Al Yah 3, SES-14
31    21:23             Canaveral 40     Falcon-9R             SES-16

LUTY 2018

01    02:07:18          Wostocznyj 1S    Sojuz-2.1a/Fregat     Kanopus-W No.3, 4, S-Net-1, 2, 3, 4,
                                                               Lemur-2 x 4, D-Star One
02    07:51:04          Jiuquan 43/603   CZ-2D                 Zhangheng-1, Fengmaniu-1, Shaonian Xing,
                                                               NuSat-4, NuSat-5, GomX-4A, GomX-4B, ? x ?
03    05:03             Kagoshima K      SSS-520               Tasuki
06    20:45:00          KSC 39A          Falcon Heavy          Tesla Roadster
12    05:03:04          Xichang 2        CZ-3B/YZ-1            Beidou-3M3, 3M4
13    08:13:33          Bajkonur 31/6    Sojuz-2.1a            Progress MS-08
21    14:17             Vandenberg 4E    Falcon-9              Paz, MicroSat-2a, MicroSat-2b
25    04:00-06:00       Kagoshima Y/1    H-2A                  IGS Optical-6
25    05:35-07:35       Canaveral 40     Falcon-9              Hispasat-1F
28    ??:??             Plesieck 43/4    Sojuz-2.1w            Kosmos (EMKA)


01    22:02-00:02       Canaveral 41     Atlas-5/541           GOES-S
06    16:38:36          Kourou ELS       Sojuz ST-B            O3b FM-13, 14, 15, 16
01-07 ??:??             Sriharikota S    GSLV Mk 2             GSat-6A
15    ??:??             Xichang          CZ-3B/G2              APStar-6C
16    ??:??             Kourou 3         Ariane-5ECA           DNS-1, Hylas-4
20    15:08             Vandenberg 4E    Falcon-9              Iridium-NEXT x 10
21    17:44             Bajkonur 1/5     Sojuz-FG              Sojuz MS-08
30    16:08             Canaveral 40     Falcon-9R             Bangabandhu-1
3D    ??:??             Sriharikota F    PSLV-XL               IRNSS-1I
??    ??:??             Jiuquan 43/603   CZ-2C/SMA             PRSS-1
??    ??:??             Xichang 2        CZ-3B/YZ-1            Beidou-3M5, 3M6
??    ??:??             Jiuquan 43/603   CZ-2D                 LKW-4
Kącik popularno-naukowy / Odp: Ciekawe kanały na YouTubie, Vimeo, etc.
« Ostatnia wiadomość wysłana przez Borys dnia Wczoraj o 23:39 »
Curious Droid - kolejny świetny kanał zajmujący się m.in. astronautyką.

<a href="http://www.youtube.com/watch?v=XLOCQw5s9Uw" target="_blank">http://www.youtube.com/watch?v=XLOCQw5s9Uw</a>
Zewnętrzny Układ Słoneczny / Odp: Neptun (zbiorczo)
« Ostatnia wiadomość wysłana przez Orionid dnia Wczoraj o 22:27 »
HST zarejestrował znikającą   dużą burzę , co stanowi niespodziankę

Hubble Sees Neptune's Mysterious Shrinking Storm
Feb. 15, 2018

The dark vortex is behaving differently from what planet-watchers predicted. "It looks like we're capturing the demise of this dark vortex, and it's different from what well-known studies led us to expect," said Michael H. Wong of the University of California at Berkeley, referring to work by Ray LeBeau (now at St. Louis University) and Tim Dowling's team at the University of Louisville. "Their dynamical simulations said that anticyclones under Neptune's wind shear would probably drift toward the equator. We thought that once the vortex got too close to the equator, it would break up and perhaps create a spectacular outburst of cloud activity."

But the dark spot, which was first seen at mid-southern latitudes, has apparently faded away rather than going out with a bang. That may be related to the surprising direction of its measured drift: toward the south pole, instead of northward toward the equator. Unlike Jupiter's GRS, the Neptune spot is not as tightly constrained by numerous alternating wind jets (seen as bands in Jupiter's atmosphere). Neptune seems to only have three broad jets: a westward one at the equator, and eastward ones around the north and south poles. The vortex should be free to change traffic lanes and cruise anywhere in between the jets.

<a href="http://www.youtube.com/watch?v=iKHtx5y6C4M" target="_blank">http://www.youtube.com/watch?v=iKHtx5y6C4M</a>

Ziemia - bezzałogowe / Odp: Start Falcon-9 z Paz i 2x MicroSat 2 (21.02.2018)
« Ostatnia wiadomość wysłana przez kanarkusmaximus dnia Wczoraj o 22:13 »
Przesunąłem posty o tym starcie. Jeśli dobra duszyczka chciałaby dodać jeszcze opis (np który to człon Falcona 9 itp itp.) to proszę o PW do mnie a ja się "włamię" do pierwszego postu i uzupełnię. :)
Ziemia - bezzałogowe / Odp: Start Falcon-9 z Paz i 2x MicroSat 2 (21.02.2018)
« Ostatnia wiadomość wysłana przez wini dnia Wczoraj o 21:33 »
Owiewki mają silniczki korekcyjne, co mogliśmy podziwiać podczas ostatniego startu Iridium. Czyli jakieś testy, czy jakkolwiek to nazwać już były. Teraz pewnie będzie ich więcej.

Tak ale niezbyt im ten odzysk wychodził dlatego pracują nad nową wersją owiewek. Musk o tym wspominał na konferencji po starcie FH, o ile mnie pamięć nie myli.
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