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Embark on a mental adventure with mind-bending mystery riddles and puzzles that are just waiting for your ingenious solutions!

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Fun
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00:00Elsa was 17 years old the day before yesterday.
00:04Next year, she'll turn 20.
00:06How come?
00:15It's possible if the present day is January 1st,
00:19while Elsa's birthday is on the 31st of December.
00:22The day before yesterday, on December 30,
00:25she was still 17 years old.
00:27Yesterday, on the 31st of December,
00:29she turned 18.
00:30Thus, this year, Elsa turns 19,
00:33and next year, 20.
00:36Elsa and her sister Helga
00:38explore an old attic in their parents' house.
00:41It's very dark and dirty.
00:43After that, they go downstairs to have some lunch.
00:46Helga's face is all covered with dust,
00:49while Elsa's face is super clean.
00:51But still, only Elsa goes to the bathroom
00:54to wash her face.
00:55Why?
01:05Elsa noticed that her sister's face was dirty.
01:08So, she thought her face must be dirty too.
01:11As for Helga,
01:13she saw that Elsa's face was clean
01:15and assumed that her own face was clean too.
01:18After lunch,
01:19Elsa and Helga go for a walk
01:21across an enchanted forest.
01:23They reach the riverbank,
01:24but the bridge is close for repairs.
01:27The sisters notice two dwarfs
01:29fishing in a boat near the bridge.
01:31They agree to help the sisters.
01:33But their boat is very tiny.
01:35It can fit either one sister or two dwarfs.
01:38Luckily, they managed to solve this issue.
01:41Elsa and Helga cross the river
01:43on the same boat.
01:44How?
01:54Well, first of all,
01:55one of the dwarfs brought his fellow
01:57on the opposite bank.
01:58Then he headed back for the sisters alone.
02:01Helga got into the boat
02:03and crossed the river.
02:04She gave the second dwarf the boat,
02:06and he returned to the opposite bank.
02:08He picked his fellow dwarf
02:09and brought him to Helga.
02:11Then one of the dwarfs swam to Elsa
02:13and passed the boat to her.
02:15She crossed the river and joined Helga,
02:17and finally,
02:18the second dwarf returned to his fellow.
02:21Helga and Elsa keep on walking
02:23and get lost in the forest.
02:25There are three roads to the nearest town.
02:27The first route is filled with mutant plants,
02:30which feed on humans.
02:31The second path leads to an ice cave,
02:34with a hungry dragon frozen
02:36inside a huge ice cube.
02:38The third route leads through
02:39a village of fairies.
02:41Their magic makes humans
02:42lose their minds.
02:44Which way is safe?
02:53Well, the dragon is trapped
02:55inside the ice cube,
02:56so it's not that dangerous.
02:59Finally, the sisters reach the town.
03:01They're walking down the main street.
03:04Suddenly, someone throws an orange
03:06right at Helga's head.
03:07Elsa identifies the apartment
03:09from which the fruit fell out
03:10and goes there to complain.
03:12She knocks,
03:13and a young man opens the door right away.
03:16Elsa explains that her sister
03:18was hit by an orange
03:19that fell from his window.
03:20But the guy says,
03:22I was washing my dog when you knocked.
03:24Only me and my pet live here,
03:26so you confused the floors.
03:28But Elsa didn't believe him.
03:30Why?
03:39According to the man,
03:40he was bathing his only pet.
03:42But the dog's hair is dry.
03:44Therefore, his story is fake.
03:47Elsa and Helga enter
03:49the local home decor shop.
03:51Helga takes a picture of her sister
03:52standing in front of the mirror.
03:54Can you spot anything odd
03:56in this photo?
04:04Take a closer look at the mirror.
04:06Elsa's hands are reflected wrong,
04:08as well as the sale poster behind her.
04:11She must be a vampire.
04:13Just kidding.
04:14The sisters continue exploring the shop.
04:17But suddenly,
04:18Elsa begins to scream and runs away.
04:20That's because one of these ladies
04:22is not alive.
04:23Can you guess who?
04:33The first woman is an ordinary human.
04:35There's a mirror behind her.
04:37The third lady has a painting of herself
04:39in the background.
04:40And the second lady,
04:41who's looking over her shoulder,
04:43is a phantom.
04:44Her reflection in the mirror
04:45doesn't match the reality.
04:48Elsa decides to hide
04:49in a building nearby.
04:51Surprise!
04:52It's a pet shop.
04:53Elsa wanders around it
04:55and spots one weird detail.
04:57Can you see it too?
05:06The turtle is wearing sunglasses.
05:09The locals tell Elsa and Helga
05:11about a creepy werewolf
05:13who has been scaring the citizens
05:15for several weeks.
05:16They only know that this werewolf
05:18is a lady
05:19and she has a husband.
05:20He's the only person
05:21who can calm her down.
05:23Elsa finds three suspects
05:25who might be the werewolf's husband.
05:27But none of them admits it.
05:29Can you find him?
05:38He's the second guy.
05:39There are suspicious brownish hairs
05:41on his clothes,
05:42although his own hair is blonde.
05:45The next day,
05:46Helga has a birthday party.
05:48Elsa goes to the bakery
05:49to purchase a cake for her.
05:51She's late,
05:52so she rushes over
05:53and bumps into a waiter.
05:55Elsa hits her head
05:56and forgets what cake
05:58Helga asked her to buy.
05:59She remembers just three things.
06:02It shouldn't have
06:03any green elements,
06:04the cake frosting
06:05shouldn't include
06:06more than one color,
06:07and it must have
06:08at least one berry.
06:09Can you help Elsa
06:11find the correct cake?
06:19Elsa should take
06:21the fourth cake.
06:22It's a chocolate cheesecake,
06:23so it doesn't have
06:24anything green.
06:25The glazing is brown
06:27and is decorated
06:28with cherries.
06:29A perfect match!
06:31Elsa buys the cake
06:32and leaves.
06:33The bakery is located
06:34inside the highest tower
06:36in town.
06:37Elsa enters the elevator
06:38to go down,
06:39but she hits
06:40the wrong button
06:41and finds herself
06:42on the roof.
06:43She decides
06:44to take some pictures
06:45with the iconic
06:45huge clock installed
06:47at the top of this tower.
06:48Oops!
06:49Elsa drops her phone
06:50from the roof.
06:51She decides to leave,
06:53but someone has already
06:54locked the door,
06:55and the elevator won't work.
06:57So she's trapped
06:59on the roof.
07:00Luckily,
07:01Elsa can still change
07:02the time of the clock.
07:03What time should Elsa
07:04set on the clock
07:05to make someone notice
07:06and rescue her?
07:16If she sets
07:17505 on the clock,
07:19it'll look like
07:20an SOS signal.
07:22Finally,
07:23Elsa escapes
07:24from the tower
07:24and heads to the parking lot.
07:26Here's her car.
07:27Can you figure out
07:28the number of the place
07:29where it's parked?
07:3987.
07:41Elsa arrives home.
07:43Helga shows her
07:44vacation photos
07:45sent by her new boyfriend,
07:47Kyle.
07:47In this case,
07:48you can see Kyle,
07:50his friend Bob,
07:51and a humanoid robot,
07:52Neo.
07:53Neo is standing
07:54next to Bob.
07:55A person wearing
07:56the yellow mask
07:57is not a man.
07:58What color
07:59is Kyle's mask?
08:08According to the terms,
08:10only the third guy
08:11can be Kyle.
08:12So his mask
08:14is blue.
08:15The birthday party
08:16is going well.
08:17It's almost midnight,
08:18so Elsa goes to the kitchen
08:20and adds candles
08:21on the birthday cake.
08:22Suddenly,
08:23she remembers
08:24that the only lighter
08:25in the house
08:26is upstairs
08:26in her room.
08:27She leaves the cake
08:29at the table
08:29for a minute.
08:30Then Elsa returns
08:31and sees the cake
08:33smashed all over the floor.
08:34She questions
08:35three suspects.
08:37Lauren says,
08:38I was in the living room
08:39all night.
08:40I don't know who did it.
08:41Wendy says,
08:42I went outside
08:43to watch the full moon.
08:44It's so beautiful tonight.
08:46Kyle says,
08:47I was shooting
08:48a TikTok dance
08:49with Helga.
08:50Who ruined the cake?
08:59Wendy.
09:00Take a look out the window.
09:02The moon is not full.
09:04Ahem.
09:04Busted.
09:06The next morning,
09:07Helga wakes up
09:08earlier than Elsa
09:09and checks her feed.
09:11Breaking news.
09:12A legendary thief
09:13ran away
09:13from a nearby prison
09:15and now creeps
09:16around the town.
09:17He's a talented
09:18shapeshifter,
09:19so no one knows
09:20for sure
09:20what he might look like.
09:22Suddenly,
09:23Helga hears someone
09:24ringing on the door.
09:25She opens
09:26and faces two guys
09:27who introduce themselves.
09:29Bob is a gardener
09:30from a nearby park
09:31and Peter is a garbage man.
09:33Both guys want
09:34to use a bathroom
09:35so they ask Helga
09:37to let them in.
09:38But only one of them
09:39is safe to invite over.
09:41Can you guess who?
09:50Bob is wearing clothes
09:51with red stains,
09:52but he's also
09:53holding a brush,
09:54so he was probably
09:56just painting a fence.
09:57Let's take a closer look
09:59at Peter's facial hair.
10:00One mustache
10:01has come unglued.
10:03It's fake.
10:04So he must be
10:05the runaway criminal
10:06from the news.
10:08Hey, space nerd!
10:09And count me
10:10as one of those too.
10:11Here's the best quiz
10:13on space trivia
10:14you'll ever take.
10:15This will definitely
10:16separate the astro-izzes
10:18from the astro-knots.
10:20Sorry, the jokes
10:21don't get any better.
10:22We'll start out easy.
10:25What is the name
10:26of the nearest star
10:27to Earth
10:27other than our sun?
10:29A. Alpha Centauri
10:31B. Proxima Centauri
10:33C. Betelgeuse
10:34D. Polaris
10:44It's Proxima Centauri.
10:46It's located
10:474.2 light-years
10:48from Earth
10:49and it's a red dwarf
10:50with a mass
10:51of around 12.5%
10:53that of our sun.
10:55What is the largest planet
10:57in our solar system?
10:58A. Earth
11:00B. Jupiter
11:02C. Saturn
11:03D. Neptune
11:13By far, the largest planet
11:15in our system
11:16is Jupiter.
11:17FYI, Jupiter's mass
11:19is more than 300 times
11:21the mass of Earth.
11:22That's simply huge.
11:25What is the name
11:26of the bright band of stars
11:28that forms a circle
11:29around the celestial sphere
11:30and is visible from Earth?
11:32A. The Zodiac
11:34B. The Milky Way
11:35C. The Great Bear
11:37D. The Orion Belt
11:49It's the Milky Way
11:50If you've ever stared
11:52at the sky on a clear night,
11:53you know what we're talking about.
11:55Earth is located
11:56in the Milky Way.
11:58Scientists believe
11:58that there are over
11:59a hundred billion stars
12:00in the Milky Way.
12:01This is probably why
12:02it shines so bright.
12:05Who was the first human
12:06to set foot on the moon?
12:08A. Neil Armstrong
12:10B. Buzz Aldrin
12:12C. Joseph Acaba
12:15D. John Glenn
12:25It was Neil Armstrong.
12:27To quote him,
12:28that's one small step for a man,
12:30one giant leap for mankind.
12:34In what year did Neil Armstrong
12:35become the first man
12:36to set foot on the moon?
12:38A. 1869
12:40B. 1920
12:41C. 1969
12:43D. 2005
12:53It was July 20, 1969.
12:56Armstrong was accompanied
12:57by another astronaut
12:59named Buzz Aldrin.
13:00They were both
13:01on the famous Apollo 11 mission
13:03and got to walk around
13:04for about three hours.
13:06How old is planet Earth
13:08estimated to be?
13:10A. 4,500 years old
13:12B. 4.5 million years old
13:16C. 450 million years old
13:19D. 4.5 billion years old
13:26Way to go
13:27if you answered
13:284.5 billion years old,
13:30give or take 50 million years.
13:32I mean, that's a hard one
13:33to calculate.
13:35Which planet
13:36is closest to the sun?
13:38A. Mercury
13:40B. Venus
13:42C. Mars
13:45D. Earth
13:54Wow, I have to say
13:56I think you should apply
13:57for a spot at NASA.
13:58The correct answer is
14:00Mercury, of course.
14:01Which planet
14:03is closest to Earth?
14:04A. Mercury
14:06B. Venus
14:09C. Mars
14:11D. Saturn
14:21Although a lot of people
14:22think it's Venus,
14:24keen physicists
14:24have calculated
14:25that it's actually Mercury
14:27that holds the spot
14:28as Earth's closest neighbor.
14:31Here's a nice one.
14:33What is it called
14:34when the Moon
14:35blocks our view
14:35of the Sun?
14:37A. Black hole
14:38B. Solar eclipse
14:40C. Lunar eclipse
14:43D. Equinox
14:52Well, it's definitely not
14:54a black hole.
14:55If the Moon
14:56blocks our view
14:56of the Sun,
14:57we call it
14:58a solar eclipse.
14:59And when the Moon
15:01passes through
15:01Earth's shadow,
15:03then it's a lunar eclipse.
15:04So,
15:05it's option B.
15:07What is the most
15:08distant object
15:09in the universe
15:10that astronomers
15:11have discovered?
15:11A. A star
15:13called Proxima Centauri
15:15B. A black hole
15:16C. A galaxy
15:18called HD1
15:19D. The International
15:21Space Station
15:27Can you imagine
15:28how far away
15:29is 13.5 billion
15:31light-years?
15:32That's how far
15:33the galaxy
15:34HD1
15:35is located.
15:35It only existed
15:37about 330 million years
15:39after the Big Bang.
15:41Yikes!
15:43So,
15:43how much time
15:44does it take sunlight
15:45to reach Earth?
15:46A. 8.20 seconds
15:48B. 8 minutes
15:50and 20 seconds
15:51C. 8 hours
15:53and 20 minutes
15:54D. 8 days
15:55and 20 hours
16:02If you guessed
16:038 minutes
16:03and 20 seconds,
16:04then you've got it right.
16:06It's crazy to think
16:07that the Sun
16:08is 93 million miles away,
16:10but it only takes
16:118 minutes
16:12for its light
16:12to get to our planet,
16:13huh?
16:14Okay,
16:15so if you've gotten
16:16over 80%
16:17of the answers
16:18correct so far,
16:19you're on a starlit path,
16:20that's for sure.
16:21The questions
16:22will get harder
16:23from now on,
16:24so hold on tight
16:25to your astronaut suit.
16:27Which Guinness
16:28World Record title
16:29does astronaut
16:30Peggy Whitson hold?
16:32A. Most spacewalks
16:34by a female
16:35B. First person
16:36on the moon
16:37in the 2000s
16:38C. Oldest person
16:40in space
16:40D. The youngest person
16:42to go to space
16:50Peggy is a legend
16:51in the astronaut world
16:52because she's gathered
16:54the most spacewalks
16:55for a female.
16:56A spacewalk
16:57is when an astronaut
16:58has to leave the spaceship
16:59to do some repair
17:00or exploration outside.
17:02They only let you do it
17:04after a lot of training,
17:05though.
17:05So, way to go, Peggy!
17:08What do astronauts
17:09use to write
17:10in outer space?
17:11A. A special pen
17:13B. A pencil
17:16C. Their computers
17:19D. They don't really
17:20write in space.
17:27You know what they say
17:29less is more.
17:30Normal pens
17:31don't really work
17:32in space
17:32due to the lack
17:33of gravity.
17:34So, astronauts
17:35need a special one
17:36in order to write.
17:39Planet Earth
17:39has liquid water
17:41because it's located
17:42in a special spot
17:43in the solar system.
17:44What's that spot called?
17:46A. The high heat zone
17:47B. The Sandberg line
17:51C. The Goldilocks zone
17:53D. The asteroid belt
18:03And you've got it
18:05just right
18:06if you answered
18:07option C.
18:08The Goldilocks zone
18:10is also known
18:11as the habitable zone.
18:12A celestial body
18:13has to be located
18:14at the exact right distance
18:16from its star
18:16to have water
18:18in its liquid form.
18:19I guess this means
18:20Earth is pretty lucky.
18:22Now, what do we call it
18:24when a star goes kaboom
18:25becoming extremely bright
18:27for a brief period of time?
18:29A. Supernova
18:30B. Nebula
18:33C. Black hole
18:36D. Galaxy
18:46It's a supernova, of course.
18:49Do you know the name
18:51of the space telescope
18:52launched by NASA
18:53in 1990
18:54which has provided
18:55many iconic images
18:56of the universe?
18:57A. Kepler Space Telescope
19:00B. James Webb Telescope
19:02C. Chandra X-ray Observatory
19:05D. Hubble Space Telescope
19:12It's our very own
19:13Hubble Telescope
19:14And yes,
19:16the images look like
19:17works of art.
19:19We've settled
19:20who the first humans
19:21to step on the moon were.
19:22But what was the name
19:24of the lunar module
19:25that carried them
19:26during the Apollo 11 mission?
19:28A. Eagle
19:30B. Orion
19:31C. Saturn
19:34D. Discovery
19:43If you answered
19:45option A
19:45then you run.
19:47Their lunar module
19:48spacecraft
19:49was nicknamed
19:50Eagle.
19:51By the way
19:51the command module
19:52left to orbit the moon
19:54until Eagle returned
19:55was called Columbia.
19:57Black holes
19:58are mysterious phenomena
20:00but what's the name
20:01of the boundaries
20:02surrounding them
20:03beyond which
20:04not even light
20:05can escape?
20:06A. Singularity
20:08B. Escape Velocity
20:10C. Interstellar Limit
20:12D. Event Horizon
20:21It would be neat
20:22if it was option C
20:23but it's called
20:24an event horizon.
20:27Way to go
20:28if you've gotten this far.
20:29Now,
20:30for the final rounds
20:30of this quiz
20:31we've selected only
20:32expert level questions.
20:34Are you ready?
20:35Good!
20:36Which space probe
20:38was launched by NASA
20:39in 1977
20:40and has since become
20:42the farthest
20:43human-made object
20:44from Earth?
20:45A. Voyager
20:46B. Pioneer
20:50C. New Horizons
20:52D. Cassini
21:01And the correct answer
21:03is option A
21:04The probe was called
21:06Voyager 1
21:07and it went all the way
21:08over to meet Jupiter.
21:10Which moon in our solar system
21:12is known to have
21:13active geysers of water
21:15erupting from its surface?
21:16A. Europa
21:18Jupiter's moon
21:19B. Titan
21:20Saturn's moon
21:21C. Insetilus
21:23Saturn's moon
21:24D. Triton
21:26Neptune's moon
21:29If you got this one right,
21:31you are definitely ready
21:32for one of NASA's
21:33next space missions.
21:34The answer is
21:35Insetilus.
21:37This moon is a small
21:38icy body
21:39with a huge ocean
21:40sitting beneath
21:41an icy crust.
21:43Scientists have become
21:44hopeful
21:44that Insetilus
21:45might be one of the places
21:47where life could exist
21:48since heat from its interior
21:50might create
21:51liquid water.
21:53So,
21:54what's the name
21:54of the space mission
21:55that successfully landed
21:57the Curiosity rover
21:58on Mars
21:59in 2012?
22:00A. Mars Odyssey
22:02B. Mars Reconnaissance Orbiter
22:05C. Mars Science Laboratory
22:08D. Mars Insight
22:16If you chose option C,
22:18you're my hero.
22:19The Curiosity rover
22:21is the predecessor
22:22of Perseverance,
22:23nicknamed Percy,
22:25the rover that's
22:25currently over there
22:26exploring any signs of life
22:28on the red planet.
22:29So,
22:30what do you say?
22:31On a scale from 1 to 10,
22:33are you an astro-novice
22:34or an astro-expert?
22:36That was fun!
22:37See you next time!
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