サクサク読めて、アプリ限定の機能も多数！
タグをすべて表示
ランキング
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
Why do clouds float?
Why isn't Earth perfectly round?
What happens when a nuclear bomb explodes?
Astronomers detect largest organic molecule ever found in a stellar 'dust trap'
Conservatives aren't more fearful than liberals, study finds
Look up! A 'potentially hazardous' asteroid will safely zip by Earth on Jan. 18
Scientists watched a star explode in real time for the first time ever
Darkness caused by dino-killing asteroid snuffed out life on Earth in 9 months
Indestructible 'Black Box' will record our planet's demise in minute detail
Jupiter's Great Red Spot is 40 times deeper than Mariana Trench
Black holes warp the universe into a grotesque hall of mirrors
These are the best astronomy images of the year
Why does outer space look black?
Long-anticipated 'UFO report' finally released. No, it's not aliens.
Never-before-seen colossal comet on a trek toward the sun
World's first nuclear bomb test created rare, otherworldly crystal
An ancient coronavirus swept across East Asia 25,000 years ago
Watch two black holes bend the daylights out of space-time in this trippy NASA visualization
Why type A blood may increase COVID-19 risk
Black holes could be dark stars with 'Planck hearts'