Noob question about NZD/USD

Hi, this is probably really simple but i want to ask anyway as i dont know the answer.

So at 10pm there was high impact news for NZD. Why did it gap up from 0.7272 to 0.7288?
Why is it not just a biiger candle at the time of the news?

not sure I see the event you are referring to on my charts but most likely when a market gaps during trading hours it is because of liquidity, most specifically the lack of liquidity. Around news there is less liquidity providers, wider spreads and more liquidity takers. Under such circumstances the perceived smoothness of the market disappears and every ticks becomes bigger. If the news is out at 10 sharp and the first tick of the new candle is far away from the last tick from the previous candle you will have a gap. if however the last tick from the previous candle and the first tick of the new candle are close and then the market moves you will have a really big candle with no gap.

other than that it can be that your broker is slow to react to the rising level of activity around news time causing his charts to gap because, for example, his server froze and stopped feeding ticks to your plateform for a moment