By Paul Rockett, Mark Ruffle

You could count number numbers throughout you, from the 8 legs on a spider to the single nostril in your face. yet are you able to count number the celebs within the sky? discover area from galaxies and stars to the planets in our sun procedure, together with Earth and the Moon.

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Why Are Black Holes Black? html Note to parents and teachers: ÛiÀÞ ivvœÀÌ …>à Lii˜ “>`i LÞ Ì…i «ÕLˆÃ…iÀ ̜ i˜ÃÕÀi ̅>Ì Ì…iÃi ÜiLÈÌià Vœ˜Ì>ˆ˜ ˜œ ˆ˜>««Àœ«Àˆ>Ìi œÀ œvvi˜ÃˆÛi “>ÌiÀˆ>° œÜiÛiÀ] LiV>ÕÃi œv ̅i ˜>ÌÕÀi œv ̅i ˜ÌiÀ˜iÌ] ˆÌ ˆÃ ˆ“«œÃÈLi ̜ }Õ>À>˜Ìii ̅>Ì Ì…i Vœ˜Ìi˜Ì œv ̅iÃi ÈÌià ܈ ˜œÌ Li >ÌiÀi`° 7i ÃÌÀœ˜}Þ advise that Internet access is supervised by a responsible adult. Large numbers 1,000,000,000,000,000,000,000,000,000,000,000 = One decillion 1,000,000,000,000,000,000,000,000,000,000 = One nonillion 1,000,000,000,000,000,000,000,000,000 = One octillion 1,000,000,000,000,000,000,000,000 = One septillion 1,000,000,000,000,000,000,000 = One sextillion 1,000,000,000,000,000,000 = One quintillion 1,000,000,000,000,000 = One quadrillion 1,000,000,000,000 = One trillion 1,000,000,000 = One billion 1,000,000 = One million 1000 = One thousand 100 = One hundred 10 = Ten 1 = One 30 Glossary alien asteroid astronaut astronomer axis Big Bang black hole cluster comet constellation eclipse elliptical equator estimate galaxy geocentric gravity heliocentric humanoid leapling meteor meteorite nuclear fusion observatory omen orbit phases phenomena planetary prediction psychological radioactive satellite sidereal day solar day star telescope UFO > VÀi>ÌÕÀi vÀœ“ >˜œÌ…iÀ ܜÀ` ÀœVŽÃ] Ó>iÀ ̅>˜ «>˜iÌÃ] ̅>Ì œÀLˆÌ ̅i -՘ a person p trained to go into space p person who studies the stars >˜ ˆ“>}ˆ˜>ÀÞ ˆ˜i >ÀœÕ˜` ܅ˆV… > «>˜iÌ « ÀœÌ>Ìià >˜ iÝ«œÃˆœ˜ ̅>Ì “>ÀŽi` ̅i LˆÀ̅ œv ̅i 1˜ˆÛiÀÃi an area in space p that has a strong gravitational force at its centre > }ÀœÕ« œv ȓˆ>À œLiVÌà œLiVÌ “>`i œv ˆVi >˜` `ÕÃÌ œÀLˆÌˆ˜} >ÀœÕ˜` ̅i -՘ a group of stars ̅i ۈiÜ œv >˜ œLiVÌ …ˆ``i˜ LÞ >˜œÌ…iÀ relating to an oval shape >˜ ˆ“>}ˆ˜>ÀÞ ˆ˜i `À>ܘ >ÀœÕ˜` ̅i >À̅ Ãi«>À>̈˜} « ̅i œÀ̅iÀ˜ >˜` -œÕ̅iÀ˜ i“ˆÃ«…iÀià >˜ >««ÀœÝˆ“>Ìi «« V>VՏ>̈œ˜ a collection of planets and stars held together by gravity Liˆiv ̅>Ì Ì…i >À̅ ˆÃ >Ì Ì…i Vi˜ÌÀi œv ̅i -œ>À -ÞÃÌi“ > vœÀVi ̅>Ì «ÕÃ œLiVÌà ̜}i̅iÀ Liˆiv ̅>Ì Ì…i -՘ ˆÃ >Ì Ì…i Vi˜ÌÀi œv ̅i -œ>À -ÞÃÌi“ ÀiÃi“Lˆ˜} > …Õ“>˜ a person p born on 29 February, a leap p day «ˆiVi œv ë>Vi ÀœVŽ Ó>iÀ ̅>˜ >˜ >ÃÌiÀœˆ` ̅i ˜>“i vœÀ > “iÌiœÀ ̅>Ì …>à >˜`i` œ˜ >À̅ > «ÀœViÃà ܅iÀi Ìܜ ii“i˜Ìà Vœ“Lˆ˜i ̜ VÀi>Ìi >˜œÌ…iÀ ii“i˜Ì] Àii>Ș} >À}i >“œÕ˜Ìà œv i˜iÀ}Þ a building designed to help see into space using telescopes >˜ œVVÕÀÀi˜Vi ̅>Ì ÃÕ}}iÃÌà L>` ̅ˆ˜}à ̜ Vœ“i > VÕÀÛi` «>̅ >˜ œLiVÌ vœœÜà }œˆ˜} >ÀœÕ˜` >˜œÌ…iÀ œLiVÌ ÃÌ>}ià œv `iÛiœ«“i˜Ì « unusual occurrences relating to planets p a thing told about the future Ài>̈˜} ̜ ̅i “ˆ˜` >˜` “i˜Ì> >V̈ۈÌÞ i“ˆÃȜ˜Ã ˆ˜ Ài뜘Ãi ̜ > ˜ÕVi>À Ài>V̈œ˜ >˜ œLiVÌ «>Vi` « ˆ˜ œÀLˆÌ >ÀœÕ˜` > «>˜iÌ « ̈“i ˆÌ Ì>Žià ̅i >À̅ ̜ “>Ži > vՏ ÀœÌ>̈œ˜ ˆ˜ >ˆ}˜“i˜Ì ̜ > distant star ̈“i ˆÌ Ì>Žià ̅i >À̅ ̜ “>Ži > ÀœÌ>̈œ˜ ˆ˜ >ˆ}˜“i˜Ì ܈̅ ̅i -՘ a bright shining ball of gas in the night sky >˜ ˆ˜ÃÌÀՓi˜Ì `iÈ}˜i` ̜ “>Ži `ˆÃÌ>˜Ì œLiVÌà >««i>À ˜i>À ÃÌ>˜`à vœÀ 1˜ˆ`i˜Ìˆwi` Þˆ˜} "LiVÌ] >˜ ՘iÝ«>ˆ˜i` « œLiVÌ ˆ˜ ̅i ÃŽÞ 31 in iindex ndex aliens 16 aliens 16–17 1 Ƃ˜`Àœ“i`> Ƃ `Àœ Àœ“ `> n Ƃ«œœ «œ œœ “ˆÃȜ˜Ã ˆÃà ˜Ã £{]] £x Aristotle A ris otle 20 0 asteroidss 7 a astronauts as ona ts 14, 4, 15, 5 1 19 9 >ÃÌÀœ˜œ“iÀà >à Àœ œ“ Àà {] x] ÓäqÓ£] qÓ ] Ó Ó{] {] ÓÇ Ç B B Big Bang an 4, 1 11 1 Vœ“iÌà Vœ iÌÌà Ç] Ó ÓÓqÓÎ qÓÎ Ha Halley’s ey’ 22 2 constellations cco stella on 5 5, 20 Copernicus, C er cus Nicolaus icolau 2 21 1 Crux C ru 5 d ys sidereal days, dereal 27 days, so days solar 2 26, 27 27, 28 Earth 4, 6, E Ea 6 7, 8 8, 10, 11, 1 12,, 1 13, 1 14, 4 18 18, 1 19, 20 20, 0 2 21,, 2 22, 23,, 2 24, 4 2 25, 2 25 26–29 –29 eclipses ecl e ip s 19 19, 20 Einstein, Ei nstei Albert A errt 21 2 Enceladus En ad dus 16 exploration, ex ora n, space ac 14 14–15 15 5 y> Ã] ܏>À y>ÀiÃ] œ>À £ £n fusion, fus ion nuclear uc ear 6, 18 8 galaxies alax es 4, 6, 8 8–11 11 elliptical e pti al 9 irre irregular gu 9 œV> V> Àœ ÀœÕ« « {] n n] ™ spiral iral 9 >ˆiˆ] >  ˆ ˆ >ˆiœ >ˆ Óä] Óä] Ó£ gravityy 8 gra 8, 9 9, 1 10, 20 20, 21 >iÞ] > iÞ `“œ˜` `“œ˜ ˜` ÓÓ i“ˆÃ«…iÀi] i ˆÃ« «…iÀi œ œÀ̅iÀ˜ …i ˜ Ó Óx] ÓÈ ÓÈ] ә i“ˆÃ«…iÀi] i ë « iÀi -œÕ̅iÀ˜ Õ̅iÀ˜ ÓÓ ÓÓ] Óx] Ó ÓÈ] ә holes, bl black 10 0 …Õ“>˜œˆ`à …Õ“> `à £È] È £Ç Hydra H ydr 5 leaplings ea 28 8 ˆˆ}…̇Þi>ÀÃ Ì Þi> Þ { {] x]] n n] £ä ä Mars 12, 1 1 13, 19 19, 21, 24 2 24, 27 7 Mercuryy 12, M 12, 1 13, 1 19, 9, 2 21, 1 24, 4, 27 “iÌiœÀˆÌià “ iœ iÃ Ç “iÌiœÀà ÌiœÀÃ Ç Milkyy Way 5,, 8 Mi 8, 10–11, 10– 1 12, 2, 28 Moon on 7, 14–15, 14 15 20, 2 , 21, 2 23, 2 , 24, 2 24 25 5 phases p es o of 25 “œœ˜Ã œ˜Ã ™] £È] Ó£] Ó£ Ó{] Ó { Óx x “Þ̅à “ ÞÌ ££ nav at n 5 navigation Neptune N pt e 1 12, 13, 3, 19, 24 24, 27 Newton, ewton Isaac sa c 20 20 observatories obs vato es 5 photo ph photosphere h re 18 planets ne ets 4 4, 5, 7, 9,, 1 11, 12 12, 13 13, 3, 14, 1 16 16, 17, 7 19, 9, 20, 21, 21 24, 27 2 *ÀœÝˆ“> * ˆ“ i˜Ì>ÕÀˆ i >ÕÀˆ Ç *̜i“Þ] œi Þ >Õ`ˆÕà >Õ`ˆÕ Õà ӣ £ sa lit 5, 14, 24 satellites Saturn urn 12, 12 13, 13 16, 16 6 19, 1 2 21, 24, 4, 27 seasons se on 29 9 -œ>À œ>À -ÞÃÌi“ ÞÃÌi“ x] x Ç] £äq£Î] ä £Î £nq£™] £nq£™ Óä] Óä Ó£] Ó£] ÓÓ] Ó] 24, 2 27, 28 28 Southern So uthe Cross C s5 stars 4 4, 5 5, 6 6–9, 10,, 1 11, 17 17, 18 18, 8, 20, 27 2 Sun 7 7, 10, 0, 12, 2 13, 13 18–19, 8–1 20, 2 2 21, 22 22,, 2 23 23, 24 24, 25,, 26, 2 27, 27 28, 28 29 ssunspots sp s 1 18, 21 tel telescopes e esc pe 5, 6, 21 21, 2 27 7 ̈“i] ˆ ] È`iÀi> `iÀi> ÓÇ /Àˆ>˜}ՏՓ ˜}ՏՓ n 1"à £Ç 1"à £Ç Universe, Un vers the ve e 4–5, 4 6, 8, 10, 10 20, 20, 21 Uranus U nuss 1 12, 2, 13, 3 19, 19 24, 24 27 7 6i˜Õà Ç] £ 6i˜ £Ó] Ó] £Î] £ £™] Ó Ó£] Ó{] { ÓÇ Õ«ˆÌiÀ « À£ £Ó] £Î £Î] Î] £ £™]] Ó Ó£] Ó{] ÓÇ i«iÀ] i« i œ…>˜˜ià œ… …> ÃÓ Óä yearss 2 ye 28, 29 leap 28 Visit our website!

25 days. 25 day ­µÕ>ÀÌiÀ œv > `>Þ® “i>˜Ã ̅>Ì iÛiÀÞ four years there is an extra day and so rather than 365 days, that year has 366 days. It is known as a leap year and falls on 29 February. /…iÀi ˆÃ > 1 in 1,461 chance of being born on 29 People born on a leapday are called leaplings. Leaplings have to wait four years before they V>˜ ¼œvwVˆ>Þ½ celebrate their birthdays. I am 3 I am 15 Born 29 February Born 28 February ˜ ܓi VœÕ˜ÌÀˆià ˆÌ Ü>à > ÌÀ>`ˆÌˆœ˜ ̅>Ì Üœ“i˜ VœÕ` œ˜Þ «Àœ«œÃi ̜ “i˜ œ˜ > leap day.

7…i˜ ̅i œÀ̅iÀ˜ i“ˆÃ«…iÀi ˆÃ ̈Ìi` >Ü>Þ vÀœ“ ̅i -՘] ˆÌ ˆÃ ܈˜ÌiÀ ˆ˜ ̅ˆÃ …i“ˆÃ«…iÀi >˜` ÃՓ“iÀ ˆ˜ ̅i -œÕ̅iÀ˜ i“ˆÃ«…iÀi° -œ ܅ˆi ̅i œÀ̅iÀ˜ i“ˆÃ«…iÀi ˆÃ …>ۈ˜} ÃՓ“iÀ] >ÕÌՓ˜] ܈˜ÌiÀ >˜` ëÀˆ˜}] ̅i -œÕ̅iÀ˜ i“ˆÃ«…iÀi ˆÃ …>ۈ˜} ̅i œ««œÃˆÌi\ ܈˜ÌiÀ] ëÀˆ˜}] ÃՓ“iÀ >˜` >ÕÌՓ˜° 29 further infoRMATION Books Know It All: Space by Andrew Langley (Franklin Watts, 2013) The Real Scientist: Space! : Why Are Black Holes Black? html Note to parents and teachers: ÛiÀÞ ivvœÀÌ …>à Lii˜ “>`i LÞ Ì…i «ÕLˆÃ…iÀ ̜ i˜ÃÕÀi ̅>Ì Ì…iÃi ÜiLÈÌià Vœ˜Ì>ˆ˜ ˜œ ˆ˜>««Àœ«Àˆ>Ìi œÀ œvvi˜ÃˆÛi “>ÌiÀˆ>° œÜiÛiÀ] LiV>ÕÃi œv ̅i ˜>ÌÕÀi œv ̅i ˜ÌiÀ˜iÌ] ˆÌ ˆÃ ˆ“«œÃÈLi ̜ }Õ>À>˜Ìii ̅>Ì Ì…i Vœ˜Ìi˜Ì œv ̅iÃi ÈÌià ܈ ˜œÌ Li >ÌiÀi`° 7i ÃÌÀœ˜}Þ advise that Internet access is supervised by a responsible adult.

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