The five questions from that day's Ballpark, each with its answer, the fact behind it and a link to the source. Rather play it first? It is in the archive.

156,000 troops
Around 156,000: 73,000 American and about 83,000 British and Canadian, including some 23,400 airborne. Source
Image: Robert F. Sargent, US Coast Guard · Public domain

640 metric tons
640 tonnes (1.41 million lb). Built to carry the Soviet space shuttle Buran, it first flew on 21 December 1988 and had an 88.4 m wingspan. Source
Image: N509FZ · CC BY-SA 4.0, cropped

8,849 meters
8,848.86 m, per the joint Nepal–China survey announced in December 2020 — 86 cm more than Nepal's old figure. Source
Image: Luca Galuzzi · CC BY-SA 3.0, cropped

500 metric tons
About 500 t (1.1 million lb) of droplets at 0.5 g per cubic meter, per USGS. It floats anyway. Source
Image: Glg · CC BY-SA 2.0 de, cropped

1.88B metric tons
1,882.6 million tonnes. China alone made 1,005 million tonnes, more than half of the total; India was second with about 150 million. Source
Image: Blast furnace chip worker · CC BY-SA 3.0, cropped