Wes stared at the enormous, ticking contraption in his grandpa's attic. It hummed quietly, lights flickering. 'Is this...?' he whispered, his heart racing.

'It's a Time Machine,' said Grandpa, his eyes twinkling. 'Ever wanted to visit the dinosaurs, Wes?' Wes gulped, nodding hesitantly.

The machine whirred to life, and Wes closed his eyes. 'Ready?' his grandpa yelled over the noise. 'Ready!' he shouted back, more to convince himself.

With a jolt, they landed. Wes peeked outside. Before him lay a lush valley, teeming with creatures he had only seen in books.

A towering Brachiosaurus lifted its head, munching on treetops. 'Incredible!' Wes exclaimed, his earlier fears forgotten in his awe.

'We're near the event,' Grandpa hinted. 'To witness history! Remember, we must not interfere,' he instructed carefully.

They watched the sky darken suspiciously. A meteor streaked across the sky, impacting with a ferocious roar that shook the earth.

Dust clouded the horizon as animals scattered. Wes felt a powerful urge to help but remembered Grandpa's words and stayed put.

The landscape changed quickly. 'It's time,' Grandpa said solemnly, and they returned to the present, the event etched in Wes's mind.

Back home, Wes pondered their journey. 'They became extinct, but today, we learn from them. Their legacy gives us knowledge,' Grandpa mused.

Wes realized the value of courage through observing rather than acting. 'Sometimes, staring history in the face teaches us the most,' he thought.

'I've learned so much today, Grandpa. Not just about dinosaurs, but about myself too,' Wes smiled, a newfound confidence in his stride.