Category: Space


All Sky Fireball Network

 

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On May. 20, 2014, the network reported 8 fireballs.
(8 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

Near Earth Asteroids

 

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

 

On May 21, 2014 there were 1475 potentially hazardous asteroids.

 

Recent & Upcoming Earth-asteroid encounters:

Notes: LD means “Lunar Distance.” 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

Asteroid
Date(UT)
Miss Distance
Size
2010 JO33
May 17
4 LD
43 m
2014 KD
May 19
7.7 LD
57 m
2014 KD2
May 20
5.2 LD
41 m
2005 UK1
May 20
36.7 LD
1.1 km
1997 WS22
May 21
47.1 LD
1.5 km
2002 JC
May 24
48.7 LD
1.4 km
2014 HQ124
Jun 8
3.3 LD
620 m
2011 PU1
Jul 18
7.6 LD
43 m

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Notes: LD means “Lunar Distance.” 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

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METEOR SHOWER ALERT:

Next weekend, Earth will pass through a stream of debris from Comet 209P/LINEAR. The encounter could spark a new meteor shower. Forecasters aren’t sure how many meteors will appear; anything is possible from a complete dud to a magnificent meteor storm. Best estimates fall between 30 and 200 meteors per hour on May 24th between 0600 UT and 0800 UT on May 24th. Get the full story from Science@NASA

 

ScienceCasts: NASA on the Lookout for a New Meteor Shower

A first-of-its-kind meteor shower is expected to occur Friday night and into early Saturday morning.

The Camelopardalid meteor shower is a first because Earth has never run into the debris from this particular comet.

The Comet 209P/LINEAR is a very dim comet that orbits the sun every five years and was discovered in 2004.

MORE: New meteor shower could turn into meteor storm

Unlike other meteor showers expected to be visible around the same time of year, the Camelopardalid is unique because its debris is strongly influenced by Jupiter’s gravity, which constantly alters the orbit of this comet’s debris, said William Cooke, head of the Meteoroid Environment Office at NASA’s Marshall Space Flight Center.

 

 

Read More Here

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Space Weather

by Dr. Tony Phillips.

All Sky Fireball Network

 

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On May. 11, 2014, the network reported 9 fireballs.
(7 sporadics, 2 eta Aquariids)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

Near Earth Asteroids

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On May 14, 2014 there were 1473 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid
Date(UT)
Miss Distance
Size
2014 HT178
May 8
5.9 LD
21 m
2014 JD
May 9
7.7 LD
24 m
2014 JG55
May 10
0.3 LD
7 m
2014 JW55
May 13
4.3 LD
23 m
2014 JH15
May 17
8 LD
59 m
2010 JO33
May 17
4 LD
43 m
2005 UK1
May 20
36.7 LD
1.1 km
1997 WS22
May 21
47.1 LD
1.5 km
2002 JC
May 24
48.7 LD
1.4 km
2014 HQ124
Jun 8
3.2 LD
615 m

Notes: LD means “Lunar Distance.” 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

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Earth Watch Report  –  Solar Activity

 

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Space Weather

by Dr. Tony Phillips.

CORONAL CANYON:

Today, the sun’s atmosphere is split down the middle by a canyon-shaped coronal hole. NASA’s Solar Dynamics Observatory photographed the chasm, which is almost directly facing Earth:

Coronal holes are places where the sun’s magnetic field opens up and allows solar wind to escape. This hole is straddling the sun’s equator so the solar wind stream emerging from it will intersect Earth’s orbit. ETA: May 16-17. High-latitude sky watchers should be alert for auroras on those dates.

 

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Earth Watch Report  –  Solar Activity

 

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Space Weather

by Dr. Tony Phillips.

SOUTHERN CORONAL HOLE:

Imagine what it would be like if, from time to time, a hole opened up in Earth’s atmosphere and air went blowing out into space. On the sun, this happens all the time. The openings are called “coronal holes.” NASA’s Solar Dynamics Obervatory is monitoring one right now; it is the dark wedge-shaped region in this extreme ultraviolet image of the sun’s southern hemisphere:

Coronal holes are places in the sun’s atmosphere where the magnetic field bends back and allows gas to escape. From such openings, solar wind blows out into space. A stream of solar wind flowing from this particular coronal hole could reach Earth on May 11-12, sparking auroras when it arrives. On the other hand, the stream might sail south of our planet, delivering only a glancing blow. Stay tuned for updates.

 

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Huge square-shaped ‘coronal hole’ spotted on Sun (VIDEO)

Published time: May 13, 2014 12:00

NASA / SDO / GODDARD SPACE CENTER

NASA / SDO / GODDARD SPACE CENTER

A gigantic square hole has been video-captured on the Sun’s surface by NASA’s Solar Dynamics Observatory (SDO). The particularly large monstrosity, known as a “coronal hole”, is an indicator of solar winds ejected out of the star at insane speeds.

 

Read More and Watch Video Here

 

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Space Weather.com

by Dr. Tony Phillips.

All Sky Fireball Network

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Apr. 25, 2014, the network reported 9 fireballs.
(9 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

On Apr. 24, 2014, the network reported 19 fireballs.
(15 sporadics, 4 April Lyrids)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

Near Earth Asteroids

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On April 26, 2014 there were 1466 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid
Date(UT)
Miss Distance
Size
2014 GG49
Apr 19
3.9 LD
31 m
2014 HP2
Apr 24
3.8 LD
15 m
2014 HU2
Apr 25
3.7 LD
22 m
2014 HM4
Apr 25
1.6 LD
18 m
2014 HW
Apr 27
2.1 LD
10 m
2007 HB15
Apr 28
6.7 LD
12 m
2014 HL2
Apr 28
8.8 LD
26 m
2014 HV2
Apr 29
1.4 LD
33 m
2010 JO33
May 17
4 LD
43 m
2005 UK1
May 20
36.7 LD
1.1 km
1997 WS22
May 21
47.1 LD
1.5 km
2002 JC
May 24
48.7 LD
1.4 km

Notes: LD means “Lunar Distance.” 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

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March 31, 2014

Organic Ejecta –Clues to Violent Events in the History of the Universe

 

Pinwheel_Spitzer

 

Exploding stars, random impacts involving comets and meteorites, and even near misses between two bodies can create regions of great heat and high pressure. Researchers from Imperial College London have now developed a method for analysing the pressure experienced by tiny samples of organic material that may have been ejected from dying stars before making a long journey through the cosmos. The researchers have investigated a type of aromatic hydrocarbon called dimethylnaphthalene, which should enable them to identify violent events in the history of the universe.

The team also believe that their new technique could be applied on Mars, potentially using the existing technology on-board roving laboratories such as the one on the Mars Science Laboratory Mission to glean information about sources of organic matter on the red planet. Recognising the pressures recorded in the aromatic hydrocarbons can help to reveal whether it came from processes generated from ancient living organisms.Samples of dimethylnaphthalene are found in meteorites. Previously, scientists have only had the ability to investigate how they have been affected by heat. The Imperial researchers say their method for detecting periods when dimethylnaphthalenes have experienced high pressure will now allow for a much more comprehensive analysis of organic materials.

 

Read More Here

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Earth Watch Report  –  Space

Image Source  NASA

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RSOE EDIS

 Earth approaching objects (objects that are known in the next 30 days)

 

Object Name Apporach Date Left AU Distance LD Distance Estimated Diameter* Relative Velocity
(2012 RJ15) 11th March 2014 0 day(s) 0.1119 43.5 51 m – 110 m 13.72 km/s 49392 km/h
(2002 SZ) 11th March 2014 0 day(s) 0.1059 41.2 220 m – 490 m 19.28 km/s 69408 km/h
(2012 RJ15) 11th March 2014 0 day(s) 0.1119 43.5 51 m – 110 m 13.72 km/s 49392 km/h
(2002 SZ) 11th March 2014 0 day(s) 0.1059 41.2 220 m – 490 m 19.28 km/s 69408 km/h
(2001 SQ3) 11th March 2014 0 day(s) 0.1871 72.8 130 m – 280 m 18.26 km/s 65736 km/h
(2013 UX2) 12th March 2014 1 day(s) 0.1482 57.7 3.8 m – 8.6 m 2.94 km/s 10584 km/h
(2010 FR9) 14th March 2014 3 day(s) 0.1210 47.1 16 m – 36 m 10.80 km/s 38880 km/h
(2014 AY28) 16th March 2014 5 day(s) 0.0429 16.7 120 m – 270 m 5.37 km/s 19332 km/h
(2005 FN) 17th March 2014 6 day(s) 0.0812 31.6 11 m – 25 m 8.09 km/s 29124 km/h
(2012 XB112) 17th March 2014 6 day(s) 0.1175 45.7 2.5 m 4.02 km/s 14471.999999999998 km/h
(2013 WT44) 17th March 2014 6 day(s) 0.0327 12.7 320 m – 710 m 11.13 km/s 40068 km/h
(2004 YC) 19th March 2014 8 day(s) 0.1054 41.0 20 m – 45 m 9.35 km/s 33660 km/h
(2003 YX1) 20th March 2014 9 day(s) 0.1654 64.4 180 m – 390 m 11.76 km/s 42336 km/h
322756 (2001 CK32) 20th March 2014 9 day(s) 0.1465 57.0 440 m – 990 m 9.06 km/s 32616 km/h
(2011 HH) 20th March 2014 9 day(s) 0.1016 39.5 23 m – 52 m 5.04 km/s 18144 km/h
(2012 FK15) 21st March 2014 10 day(s) 0.1495 58.2 13 m – 30 m 13.66 km/s 49176 km/h
(2003 HT42) 22nd March 2014 11 day(s) 0.0942 36.6 29 m – 65 m 7.54 km/s 27144 km/h
325102 (2008 EY5) 23rd March 2014 12 day(s) 0.0789 30.7 250 m – 570 m 12.89 km/s 46404 km/h
(2013 GW68) 24th March 2014 13 day(s) 0.1950 75.9 110 m – 240 m 16.74 km/s 60263.99999999999 km/h
(2011 EN40) 24th March 2014 13 day(s) 0.1662 64.7 220 m – 490 m 27.82 km/s 100152 km/h
(2013 FD8) 25th March 2014 14 day(s) 0.0851 33.1 19 m – 43 m 11.55 km/s 41580 km/h
143649 (2003 QQ47) 25th March 2014 14 day(s) 0.1283 49.9 880 m – 2.0 km 32.41 km/s 116675.99999999999 km/h
(2012 FM35) 27th March 2014 16 day(s) 0.1916 74.6 9.2 m – 21 m 8.84 km/s 31824 km/h
(2011 FT53) 27th March 2014 16 day(s) 0.1007 39.2 23 m – 52 m 12.36 km/s 44496 km/h
(2012 EA) 29th March 2014 18 day(s) 0.0356 13.9 11 m – 25 m 6.00 km/s 21600 km/h
(2009 FW25) 29th March 2014 18 day(s) 0.0715 27.8 56 m – 120 m 12.34 km/s 44424 km/h
(2009 FD) 31st March 2014 20 day(s) 0.1009 39.3 100 m – 230 m 12.89 km/s 46404 km/h
(2009 SA100) 31st March 2014 20 day(s) 0.0445 17.3 44 m – 99 m 7.99 km/s 28764 km/h
(2010 GD35) 31st March 2014 20 day(s) 0.0489 19.0 33 m – 75 m 11.07 km/s 39852 km/h
(2009 CT) 31st March 2014 20 day(s) 0.1984 77.2 320 m – 710 m 13.35 km/s 48060 km/h
243566 (1995 SA) 01st April 2014 21 day(s) 0.1879 73.1 970 m – 2.2 km 14.22 km/s 51192 km/h
(2001 QC34) 01st April 2014 21 day(s) 0.1082 42.1 250 m – 570 m 4.78 km/s 17208 km/h
(2013 TT5) 03rd April 2014 23 day(s) 0.0959 37.3 15 m – 33 m 4.04 km/s 14544 km/h
86878 (2000 HD24) 03rd April 2014 23 day(s) 0.1084 42.2 800 m – 1.8 km 20.44 km/s 73584 km/h
(2010 GC35) 06th April 2014 26 day(s) 0.0677 26.3 31 m – 68 m 4.59 km/s 16524 km/h
(2008 OC6) 07th April 2014 27 day(s) 0.1949 75.8 530 m – 1.2 km 14.34 km/s 51624 km/h
330659 (2008 GG2) 09th April 2014 29 day(s) 0.1450 56.4 77 m – 170 m 7.16 km/s 25776 km/h
1 AU = ~150 million kilometers,1 LD = Lunar Distance = ~384,000 kilometers Source: NASA-NEO

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Space Weather

by Dr. Tony Phillips.

 All Sky Fireball Network

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Mar. 10, 2014, the network reported 3 fireballs.
(3 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

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Universe Today

Now’s the Time to See Asteroid Pallas at its Best

by David Dickinson on February 18, 2014

2 Pallas

Images of 2 Pallas taken by Hubble (right) and a simulation (left) of the surface. Credit: NASA/JPL.

Looking for something off of the beaten celestial path to observe? The coming weeks will offer telescope users a rare chance to catch a well known asteroid, as it puts on its best show for over two decades.

Over the coming weeks, 2 Pallas, one of the “big four” asteroids – or do you say minor/dwarf planet/planetoid? – reaches a favorable observing point known as opposition. Gliding northward through the constellations of Hydra and Sextans through February and March 2014, 2 Pallas presents a favorable binocular challenge for both northern and southern hemisphere observers as it rises to the east opposite to the setting Sun and transits the local meridian around midnight.

And although 2 Pallas reaches opposition roughly every 16 months as seen from our Earthly vantage point, 2014 provides a chance to catch it under exceptional circumstances. And to top it off, the other “Big 4” asteroids – 1 Ceres, 3 Juno and 4 Vesta – are all currently visible as well and reach opposition in the January through April time frame.

Pallas HST

2 Pallas as imaged by the Hubble Space Telescope. Credit: NASA

Pallas and its brethren also have a checkered history though the course of 19th century astronomy.  The second minor planet to be discovered, Heinrich Wilhelm Olbers spied 2 Pallas near opposition on the night of March 28th, 1802. Olbers made this discovery observing from his home rooftop observatory in Bremen, Germany using a five foot – telescopes were often measured in focal length rather than aperture in those days – Dollond refractor.

Olbers discovered 2 Pallas on the border of the astronomical constellations of Virgo and Coma Berenices shining at magnitude +7.5.

Pallas orbit

A simulation of the orbit of 2 Pallas near opposition this month. Credit: NASA/JPL Horizons.

If the name Olbers sounds familiar, it’s because he also lent it to the paradox that now bears his name. Obler’s paradox was one of the first true questions in cosmology posed in a scientific framework that asked: if the universe is actually infinite in time and space, then why isn’t the sky infinitely bright? And, on a curious side note, it was American horror author Edgar Allan Poe that delivered the answer.

But now back to our solar system. Olbers also discovered 4 Vesta just five years after Pallas.

He was definitely on a roll. The discoveries of these space rocks also grabbed the attention of Olbers contemporary, Johann Bode. Bode had formulated a law now known as the Titus-Bode Law that seemed to put the spacing of then known bodies of the solar system in tidy order. In fact, the Titus-Bode law seemed to predict that a body should lie between Mars and Jupiter, and for a brief time in the 18th century — and again in 2006 when the International Astronomical Union let Eris and Pluto in the door before kicking them back out — Ceres, Pallas, Juno and Vesta were all considered planets.

Read More Here

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Universe Today

A mosaic of two wide field images taken from the Nevada desert, with the view stretching from Cepheus to the Milky Way core in Sagittarius. Credit and copyright: Tanja Sund. A mosaic of two wide field images taken from the Nevada desert, with the view stretching from Cepheus to the Milky Way core in Sagittarius. Credit and copyright: Tanja Sund.

This gorgeous view of the Milky Way was taken by astrophotographer Tanja Sund during a trip to the desert in Nevada. Made from just two images, this long exposure (180 seconds) mosaic has incredible detail and stunning clarity. You seriously need to click on this image to see a larger version!

Read More Here

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