You’ve made it to the end of the week! has five things you need to know: Trudeau’s first hundred days in office; scientists are celebrating a major victory by making weird sounds; Canada wants its Security Council seat back; a grandmother wins millions of dollars; and the Titanic is reborn.

1. 100 days: Prime Minister Justin Trudeau’s Liberal government has been in office for 100 days. So how have they done so far? We asked a panel of strategists to help write them report card.

2. Look who’s chirping: If you could hear a gravitational wave, what would it sound like? Sort of like a slowed-down police siren, if you believe all the scientists recording themselves making “chirps.” You can listen to them here and join in the fun.

3. Take a seat: Canada suffered a diplomatic blow when it lost its seat on the Security Council to Portugal. Now the Liberal government wants it back. Prime Minister Justin Trudeau made that known as he met with UN Secretary General Ban Ki-Moon.

4. Diamonds on the soles? A small-town Ontario grandmother won $18.3 million, and she plans on buying her husband a pair of cowboy boots. Marilyn Pidlaoan actually won the draw back on Jan. 30, but only released she had won the big jackpot yesterday.

5. King of the world! More than 100 years after the Titanic struck an iceberg and sank in the frigid North Atlantic Ocean, it’s set to sail again -- or at least a fully-functional replica. For those daring (and rich) enough to buy a ticket, the vessel is expected to be built by 2018. Let’s hope this time it has better luck.

And one more thing for Flashback Friday…26 years ago today a tire fire erupted in Hagersville, Ont. The fire, which was roughly the size of 18 football fields, raged for 17 days and forced more than 4,000 people from their homes.

CTV News Archives: Hagersville, Ont. tire fire